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<!--Created on: 2/27/2023 9:57:06 PM-->
<!--Modified on: 2/27/2023 9:57:06 PM-->
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    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US">Statement [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US">Statement [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US">Statement</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US">Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US">Assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and cash equivalents (at cost $317,868,749 and $248,404,703, respectively)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialInstrumentsOwnedAtFairValueByTypeAbstract" xlink:label="us-gaap_FinancialInstrumentsOwnedAtFairValueByTypeAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancialInstrumentsOwnedAtFairValueByTypeAbstract" xlink:to="us-gaap_FinancialInstrumentsOwnedAtFairValueByTypeAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinancialInstrumentsOwnedAtFairValueByTypeAbstract_lbl" xml:lang="en-US">Financial Instruments, Owned, at Fair Value [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinancialInstrumentsOwnedAtFairValueByTypeAbstract_lbl" xml:lang="en-US">Equity in trading accounts:</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_CashAndCashEquivalentsEquityInTradingAccounts" xlink:label="ung_CashAndCashEquivalentsEquityInTradingAccounts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_CashAndCashEquivalentsEquityInTradingAccounts" xlink:to="ung_CashAndCashEquivalentsEquityInTradingAccounts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_CashAndCashEquivalentsEquityInTradingAccounts_lbl" xml:lang="en-US">The amount of cash and cash equivalents, equity in trading accounts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_CashAndCashEquivalentsEquityInTradingAccounts_lbl" xml:lang="en-US">Cash and Cash Equivalents Equity in trading accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_CashAndCashEquivalentsEquityInTradingAccounts_lbl" xml:lang="en-US">Cash and cash equivalents (at cost $241,622,902 and $127,265,650, respectively)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_CashAndCashEquivalentsEquityInTradingAccounts_lbl" xml:lang="en-US">Cash and cash equivalents equity in trading accounts</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_UnrealizedGainLossOnOpenCommodityFuturesAndClearedSwapContracts" xlink:label="ung_UnrealizedGainLossOnOpenCommodityFuturesAndClearedSwapContracts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_UnrealizedGainLossOnOpenCommodityFuturesAndClearedSwapContracts" xlink:to="ung_UnrealizedGainLossOnOpenCommodityFuturesAndClearedSwapContracts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_UnrealizedGainLossOnOpenCommodityFuturesAndClearedSwapContracts_lbl" xml:lang="en-US">Unrealized gain (loss) on open commodity futures and cleared swap contracts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_UnrealizedGainLossOnOpenCommodityFuturesAndClearedSwapContracts_lbl" xml:lang="en-US">Unrealized Gain Loss On Open Commodity Futures and Cleared Swap Contracts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_UnrealizedGainLossOnOpenCommodityFuturesAndClearedSwapContracts_lbl" xml:lang="en-US">Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_UnrealizedGainLossOnOpenCommodityFuturesAndClearedSwapContracts_lbl" xml:lang="en-US">Unrealized gain (loss) on open commodity futures contracts</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_ReceivableForSharesSold" xlink:label="ung_ReceivableForSharesSold" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_ReceivableForSharesSold" xlink:to="ung_ReceivableForSharesSold_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_ReceivableForSharesSold_lbl" xml:lang="en-US">It represents the amount Receivable for shares sold.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_ReceivableForSharesSold_lbl" xml:lang="en-US">Receivable for Shares Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_ReceivableForSharesSold_lbl" xml:lang="en-US">Receivable for shares sold</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DividendsReceivable" xlink:label="us-gaap_DividendsReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsReceivable" xlink:to="us-gaap_DividendsReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsReceivable_lbl" xml:lang="en-US">Dividends Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsReceivable_lbl" xml:lang="en-US">Dividends receivable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestReceivable" xlink:label="us-gaap_InterestReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestReceivable" xlink:to="us-gaap_InterestReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestReceivable_lbl" xml:lang="en-US">Interest Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InterestReceivable_lbl" xml:lang="en-US">Interest receivable</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_PrepaidInsuranceCurrentAndNonCurrent" xlink:label="ung_PrepaidInsuranceCurrentAndNonCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_PrepaidInsuranceCurrentAndNonCurrent" xlink:to="ung_PrepaidInsuranceCurrentAndNonCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_PrepaidInsuranceCurrentAndNonCurrent_lbl" xml:lang="en-US">Amount of prepaid insurance outstanding as of balance sheet date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_PrepaidInsuranceCurrentAndNonCurrent_lbl" xml:lang="en-US">Prepaid Insurance, Current And Non-Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_PrepaidInsuranceCurrentAndNonCurrent_lbl" xml:lang="en-US">Prepaid insurance</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="us-gaap_ReceivablesNetCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesNetCurrent" xlink:to="us-gaap_ReceivablesNetCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivablesNetCurrent_lbl" xml:lang="en-US">Receivables, Net, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReceivablesNetCurrent_lbl" xml:lang="en-US">ETF transaction fees receivable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">Assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">Total Assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalNotesAbstract" xlink:label="us-gaap_PartnersCapitalNotesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalNotesAbstract" xlink:to="us-gaap_PartnersCapitalNotesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalNotesAbstract_lbl" xml:lang="en-US">Partners Capital Notes [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PartnersCapitalNotesAbstract_lbl" xml:lang="en-US">Liabilities and Partners' Capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent" xlink:label="us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent" xlink:to="us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent_lbl" xml:lang="en-US">Due to Officers or Stockholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent_lbl" xml:lang="en-US">General Partner management fees payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent" xlink:label="us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent" xlink:to="us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent_lbl" xml:lang="en-US">Accrued Professional Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent_lbl" xml:lang="en-US">Professional fees payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommissionsPayableToBrokerDealersAndClearingOrganizations" xlink:label="us-gaap_CommissionsPayableToBrokerDealersAndClearingOrganizations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommissionsPayableToBrokerDealersAndClearingOrganizations" xlink:to="us-gaap_CommissionsPayableToBrokerDealersAndClearingOrganizations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommissionsPayableToBrokerDealersAndClearingOrganizations_lbl" xml:lang="en-US">Commissions Payable to Broker-Dealers and Clearing Organizations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommissionsPayableToBrokerDealersAndClearingOrganizations_lbl" xml:lang="en-US">Brokerage commissions payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ManagementFeePayable" xlink:label="us-gaap_ManagementFeePayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ManagementFeePayable" xlink:to="us-gaap_ManagementFeePayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ManagementFeePayable_lbl" xml:lang="en-US">Management Fee Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ManagementFeePayable_lbl" xml:lang="en-US">Directors' fees payable</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_LicenseFeesPayableCurrentAndNoncurrent" xlink:label="ung_LicenseFeesPayableCurrentAndNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_LicenseFeesPayableCurrentAndNoncurrent" xlink:to="ung_LicenseFeesPayableCurrentAndNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_LicenseFeesPayableCurrentAndNoncurrent_lbl" xml:lang="en-US">License fees payable current and noncurrent.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_LicenseFeesPayableCurrentAndNoncurrent_lbl" xml:lang="en-US">License Fees Payable Current And Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_LicenseFeesPayableCurrentAndNoncurrent_lbl" xml:lang="en-US">License fees payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueToRelatedPartiesNoncurrent" xlink:label="us-gaap_DueToRelatedPartiesNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueToRelatedPartiesNoncurrent" xlink:to="us-gaap_DueToRelatedPartiesNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DueToRelatedPartiesNoncurrent_lbl" xml:lang="en-US">Due to Related Parties, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DueToRelatedPartiesNoncurrent_lbl" xml:lang="en-US">Payable to related party</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US">Liabilities, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US">Total Liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US">Commitments and Contingencies.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US">Commitments and Contingencies</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAbstract" xlink:label="us-gaap_PartnersCapitalAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="us-gaap_PartnersCapitalAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAbstract_lbl" xml:lang="en-US">Partners Capital [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PartnersCapitalAbstract_lbl" xml:lang="en-US">Partners' Capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GeneralPartnersCapitalAccount" xlink:label="us-gaap_GeneralPartnersCapitalAccount" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralPartnersCapitalAccount_lbl" xml:lang="en-US">General Partners Capital Account</label>
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    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_NetAssetValuePerUnit" xlink:label="ung_NetAssetValuePerUnit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_NetAssetValuePerUnit" xlink:to="ung_NetAssetValuePerUnit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_NetAssetValuePerUnit_lbl" xml:lang="en-US">Per unit of net asset value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_NetAssetValuePerUnit_lbl" xml:lang="en-US">Net Asset Value Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ung_NetAssetValuePerUnit_lbl" xml:lang="en-US">Net asset value, end of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ung_NetAssetValuePerUnit_lbl" xml:lang="en-US">Net asset value, beginning of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_NetAssetValuePerUnit_lbl" xml:lang="en-US">Net asset value per unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_NetAssetValuePerUnit_lbl" xml:lang="en-US">Net asset value per share</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_MarketValuePerUnit" xlink:label="ung_MarketValuePerUnit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_MarketValuePerUnit" xlink:to="ung_MarketValuePerUnit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_MarketValuePerUnit_lbl" xml:lang="en-US">Market value per unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_MarketValuePerUnit_lbl" xml:lang="en-US">Market Value Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_MarketValuePerUnit_lbl" xml:lang="en-US">Market value per share</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_StatementScheduleOfInvestmentsAbstract" xlink:label="ung_StatementScheduleOfInvestmentsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_StatementScheduleOfInvestmentsAbstract" xlink:to="ung_StatementScheduleOfInvestmentsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_StatementScheduleOfInvestmentsAbstract_lbl" xml:lang="en-US">Statement - Schedule of Investments [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_StatementScheduleOfInvestmentsAbstract_lbl" xml:lang="en-US">Schedule of Investments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeAxis" xlink:to="us-gaap_InvestmentTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xml:lang="en-US">Investment Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeCategorizationMember" xlink:to="us-gaap_InvestmentTypeCategorizationMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xml:lang="en-US">Investments [Domain]</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_OpenCommodityFuturesContractsLongMember" xlink:label="ung_OpenCommodityFuturesContractsLongMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_OpenCommodityFuturesContractsLongMember" xlink:to="ung_OpenCommodityFuturesContractsLongMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_OpenCommodityFuturesContractsLongMember_lbl" xml:lang="en-US">Open Commodity Futures Contracts, Long.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_OpenCommodityFuturesContractsLongMember_lbl" xml:lang="en-US">Open Commodity Futures Contracts, Long</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashEquivalentsMember" xlink:label="us-gaap_CashEquivalentsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashEquivalentsMember" xlink:to="us-gaap_CashEquivalentsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashEquivalentsMember_lbl" xml:lang="en-US">Cash Equivalents [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashEquivalentsMember_lbl" xml:lang="en-US">Cash Equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis" xlink:label="srt_StatementGeographicalAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_StatementGeographicalAxis_lbl" xml:lang="en-US">Geographical [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain" xlink:label="srt_SegmentGeographicalDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_SegmentGeographicalDomain" xlink:to="srt_SegmentGeographicalDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_SegmentGeographicalDomain_lbl" xml:lang="en-US">Geographical [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_US" xlink:label="country_US" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_US" xlink:to="country_US_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_US_lbl" xml:lang="en-US">United States [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_US_lbl" xml:lang="en-US">United States</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:label="us-gaap_CashAndCashEquivalentsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAxis" xlink:to="us-gaap_CashAndCashEquivalentsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAxis_lbl" xml:lang="en-US">Cash and Cash Equivalents [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl" xml:lang="en-US">Cash and Cash Equivalents [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MoneyMarketFundsMember" xlink:label="us-gaap_MoneyMarketFundsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MoneyMarketFundsMember" xlink:to="us-gaap_MoneyMarketFundsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MoneyMarketFundsMember_lbl" xml:lang="en-US">Money Market Funds [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MoneyMarketFundsMember_lbl" xml:lang="en-US">Money Market Funds</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:to="srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" xml:lang="en-US">Investment, Name [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="srt_EquityMethodInvesteeNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_EquityMethodInvesteeNameDomain" xlink:to="srt_EquityMethodInvesteeNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_EquityMethodInvesteeNameDomain_lbl" xml:lang="en-US">Investment, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_NymexNaturalGasFuturesNgFebruary2023ContractsExpiringJanuary2023Member" xlink:label="ung_NymexNaturalGasFuturesNgFebruary2023ContractsExpiringJanuary2023Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_NymexNaturalGasFuturesNgFebruary2023ContractsExpiringJanuary2023Member" xlink:to="ung_NymexNaturalGasFuturesNgFebruary2023ContractsExpiringJanuary2023Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_NymexNaturalGasFuturesNgFebruary2023ContractsExpiringJanuary2023Member_lbl" xml:lang="en-US">This member stand for NYMEX Natural Gas Futures NG February 2023 contracts, expiring January 2023.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_NymexNaturalGasFuturesNgFebruary2023ContractsExpiringJanuary2023Member_lbl" xml:lang="en-US">NYMEX Natural Gas Futures NG February 2023 contracts, expiring January 2023 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_NymexNaturalGasFuturesNgFebruary2023ContractsExpiringJanuary2023Member_lbl" xml:lang="en-US">NYMEX Natural Gas Futures NG February 2023 contracts, expiring January 2023</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_NymexNaturalGasFuturesNgFebruary2022ContractsExpiringJanuary2022Member" xlink:label="ung_NymexNaturalGasFuturesNgFebruary2022ContractsExpiringJanuary2022Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_NymexNaturalGasFuturesNgFebruary2022ContractsExpiringJanuary2022Member" xlink:to="ung_NymexNaturalGasFuturesNgFebruary2022ContractsExpiringJanuary2022Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_NymexNaturalGasFuturesNgFebruary2022ContractsExpiringJanuary2022Member_lbl" xml:lang="en-US">NYMEX Natural Gas Futures NG February 2022 contracts, expiring January 2022</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_NymexNaturalGasFuturesNgFebruary2022ContractsExpiringJanuary2022Member_lbl" xml:lang="en-US">Nymex Natural Gas Futures Ng February 2022 Contracts Expiring January 2022 Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_NymexNaturalGasFuturesNgFebruary2022ContractsExpiringJanuary2022Member_lbl" xml:lang="en-US">NYMEX Natural Gas Futures NG February 2022 contracts, expiring January 2022</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember" xlink:label="ung_GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember" xlink:to="ung_GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember_lbl" xml:lang="en-US">Goldman sachs financial square government fund institutional shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember_lbl" xml:lang="en-US">Goldman Sachs Financial Square Government Fund Institutional Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember_lbl" xml:lang="en-US">Goldman Sachs Financial Square Government Fund - Institutional Shares</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember" xlink:label="ung_MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember" xlink:to="ung_MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember_lbl" xml:lang="en-US">Morgan stanley institutional liquidity funds government portfolio  institutional shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember_lbl" xml:lang="en-US">Morgan Stanley Institutional Liquidity Funds Government Portfolio Institutional Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember_lbl" xml:lang="en-US">Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember" xlink:label="ung_RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember" xlink:to="ung_RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember_lbl" xml:lang="en-US">RBC U.S. government money market fund institutional shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember_lbl" xml:lang="en-US">RBC U.S. Government Money Market Fund Institutional Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember_lbl" xml:lang="en-US">RBC U.S. Government Money Market Fund - Institutional Shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentOwnedAtFairValue" xlink:label="us-gaap_InvestmentOwnedAtFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentOwnedAtFairValue" xlink:to="us-gaap_InvestmentOwnedAtFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xml:lang="en-US">Investment Owned, at Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xml:lang="en-US">Notional Amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentOwnedBalanceContracts" xlink:label="us-gaap_InvestmentOwnedBalanceContracts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentOwnedBalanceContracts" xlink:to="us-gaap_InvestmentOwnedBalanceContracts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentOwnedBalanceContracts_lbl" xml:lang="en-US">Investment Owned, Balance, Contracts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InvestmentOwnedBalanceContracts_lbl" xml:lang="en-US">Number of Contracts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentOwnedBalancePrincipalAmount" xlink:label="us-gaap_InvestmentOwnedBalancePrincipalAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentOwnedBalancePrincipalAmount" xlink:to="us-gaap_InvestmentOwnedBalancePrincipalAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentOwnedBalancePrincipalAmount_lbl" xml:lang="en-US">Investment Owned, Balance, Principal Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InvestmentOwnedBalancePrincipalAmount_lbl" xml:lang="en-US">Shares/Principal Amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue" xlink:label="us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue" xlink:to="us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue_lbl" xml:lang="en-US">Investment Owned, Face Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue_lbl" xml:lang="en-US">Market Value</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_PercentageOfPartnersCapital" xlink:label="ung_PercentageOfPartnersCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_PercentageOfPartnersCapital" xlink:to="ung_PercentageOfPartnersCapital_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_PercentageOfPartnersCapital_lbl" xml:lang="en-US">Represents the percentage of partners capital.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_PercentageOfPartnersCapital_lbl" xml:lang="en-US">Percentage Of Partners Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_PercentageOfPartnersCapital_lbl" xml:lang="en-US">% of Partners' Capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentOwnedSubjectToOptionExerciseDates" xlink:label="us-gaap_InvestmentOwnedSubjectToOptionExerciseDates" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentOwnedSubjectToOptionExerciseDates" xlink:to="us-gaap_InvestmentOwnedSubjectToOptionExerciseDates_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentOwnedSubjectToOptionExerciseDates_lbl" xml:lang="en-US">Investment Owned Subject To Option Exercise Dates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InvestmentOwnedSubjectToOptionExerciseDates_lbl" xml:lang="en-US">Expiration date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentInterestRate" xlink:label="us-gaap_InvestmentInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentInterestRate" xlink:to="us-gaap_InvestmentInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentInterestRate_lbl" xml:lang="en-US">Investment Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InvestmentInterestRate_lbl" xml:lang="en-US">Investment interest rate</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_CollateralAmountOnOpenFuturesContracts" xlink:label="ung_CollateralAmountOnOpenFuturesContracts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_CollateralAmountOnOpenFuturesContracts" xlink:to="ung_CollateralAmountOnOpenFuturesContracts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_CollateralAmountOnOpenFuturesContracts_lbl" xml:lang="en-US">The collateral amount on open future contracts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_CollateralAmountOnOpenFuturesContracts_lbl" xml:lang="en-US">Collateral Amount On Open Commodity Futures Contracts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_CollateralAmountOnOpenFuturesContracts_lbl" xml:lang="en-US">Collateral amount on open commodity futures contracts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US">Statements of Operations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenuesAbstract" xlink:label="us-gaap_RevenuesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US">Revenues [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US">Income</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_GainLossOnCommodityFuturesAbstract" xlink:label="ung_GainLossOnCommodityFuturesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_GainLossOnCommodityFuturesAbstract" xlink:to="ung_GainLossOnCommodityFuturesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_GainLossOnCommodityFuturesAbstract_lbl" xml:lang="en-US">Gain (Loss) On Commodity Futures [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_GainLossOnCommodityFuturesAbstract_lbl" xml:lang="en-US">Gain Loss On Commodity Futures [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_GainLossOnCommodityFuturesAbstract_lbl" xml:lang="en-US">Gain (loss) on trading of commodity futures contracts:</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainLossOnSaleOfCommodityContracts" xlink:label="us-gaap_GainLossOnSaleOfCommodityContracts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfCommodityContracts" xlink:to="us-gaap_GainLossOnSaleOfCommodityContracts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnSaleOfCommodityContracts_lbl" xml:lang="en-US">Gain Loss On Sale Of Commodity Contracts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnSaleOfCommodityContracts_lbl" xml:lang="en-US">Realized gain (loss) on closed commodity futures contracts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrealizedGainLossOnCommodityContracts" xlink:label="us-gaap_UnrealizedGainLossOnCommodityContracts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrealizedGainLossOnCommodityContracts" xlink:to="us-gaap_UnrealizedGainLossOnCommodityContracts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrealizedGainLossOnCommodityContracts_lbl" xml:lang="en-US">Unrealized Gain Loss On Commodity Contracts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnrealizedGainLossOnCommodityContracts_lbl" xml:lang="en-US">Change in unrealized gain (loss) on open commodity futures contracts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DividendIncomeOperating" xlink:label="us-gaap_DividendIncomeOperating" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendIncomeOperating" xlink:to="us-gaap_DividendIncomeOperating_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendIncomeOperating_lbl" xml:lang="en-US">Dividend Income, Operating</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendIncomeOperating_lbl" xml:lang="en-US">Dividend income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestIncomeOperating" xlink:label="us-gaap_InterestIncomeOperating" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeOperating" xlink:to="us-gaap_InterestIncomeOperating_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestIncomeOperating_lbl" xml:lang="en-US">Interest Income, Securities, Operating</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestIncomeOperating_lbl" xml:lang="en-US">Interest income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherIncome" xlink:label="us-gaap_OtherIncome" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherIncome" xlink:to="us-gaap_OtherIncome_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherIncome_lbl" xml:lang="en-US">Other Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherIncome_lbl" xml:lang="en-US">ETF transaction fees</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US">Revenues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US">Total Income (Loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US">Total Income (Loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US">Operating Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US">Expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ManagementFeeExpense" xlink:label="us-gaap_ManagementFeeExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ManagementFeeExpense" xlink:to="us-gaap_ManagementFeeExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ManagementFeeExpense_lbl" xml:lang="en-US">Management Fee Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ManagementFeeExpense_lbl" xml:lang="en-US">General Partner management fees</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProfessionalFees" xlink:label="us-gaap_ProfessionalFees" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfessionalFees" xlink:to="us-gaap_ProfessionalFees_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfessionalFees_lbl" xml:lang="en-US">Professional Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfessionalFees_lbl" xml:lang="en-US">Professional fees</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FloorBrokerageExchangeAndClearanceFees" xlink:label="us-gaap_FloorBrokerageExchangeAndClearanceFees" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FloorBrokerageExchangeAndClearanceFees" xlink:to="us-gaap_FloorBrokerageExchangeAndClearanceFees_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FloorBrokerageExchangeAndClearanceFees_lbl" xml:lang="en-US">Floor Brokerage Exchange and Clearance Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FloorBrokerageExchangeAndClearanceFees_lbl" xml:lang="en-US">Commissions accrued to brokers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FloorBrokerageExchangeAndClearanceFees_lbl" xml:lang="en-US">Brokerage commissions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoninterestExpenseDirectorsFees" xlink:label="us-gaap_NoninterestExpenseDirectorsFees" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoninterestExpenseDirectorsFees" xlink:to="us-gaap_NoninterestExpenseDirectorsFees_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoninterestExpenseDirectorsFees_lbl" xml:lang="en-US">Noninterest Expense Directors Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NoninterestExpenseDirectorsFees_lbl" xml:lang="en-US">Directors' fees and insurance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NoninterestExpenseDirectorsFees_lbl" xml:lang="en-US">Directors fees and expenses</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_LicenseFeesAndOtherOfferingExpenses" xlink:label="ung_LicenseFeesAndOtherOfferingExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_LicenseFeesAndOtherOfferingExpenses" xlink:to="ung_LicenseFeesAndOtherOfferingExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_LicenseFeesAndOtherOfferingExpenses_lbl" xml:lang="en-US">Amount of license fees and other offering expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_LicenseFeesAndOtherOfferingExpenses_lbl" xml:lang="en-US">License Fees And Other Offering Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_LicenseFeesAndOtherOfferingExpenses_lbl" xml:lang="en-US">License Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_LicenseFeesAndOtherOfferingExpenses_lbl" xml:lang="en-US">Licensing fee incurred</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherExpenses" xlink:label="us-gaap_OtherExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherExpenses" xlink:to="us-gaap_OtherExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherExpenses_lbl" xml:lang="en-US">Other Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OtherExpenses_lbl" xml:lang="en-US">Registration fees</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US">Operating Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US">Total Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US">Total Expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossAllocatedToLimitedPartners" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAllocatedToLimitedPartners" xlink:to="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl" xml:lang="en-US">Net Income (Loss) Allocated to Limited Partners</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl" xml:lang="en-US">Net Income (Loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted" xlink:to="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted_lbl" xml:lang="en-US">Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted_lbl" xml:lang="en-US">Net Income (Loss) per limited partner share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted" xlink:label="us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted" xlink:to="us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted_lbl" xml:lang="en-US">Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted_lbl" xml:lang="en-US">Net Income (Loss) per weighted average limited partner share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding" xlink:label="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding" xlink:to="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding_lbl" xml:lang="en-US">Weighted Average Limited Partnership Units Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding_lbl" xml:lang="en-US">Weighted average limited partner shares outstanding</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_InterestIncomeMaximumPercentageOfPaidInKind" xlink:label="ung_InterestIncomeMaximumPercentageOfPaidInKind" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_InterestIncomeMaximumPercentageOfPaidInKind" xlink:to="ung_InterestIncomeMaximumPercentageOfPaidInKind_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_InterestIncomeMaximumPercentageOfPaidInKind_lbl" xml:lang="en-US">The maximum percentage of paid in kind amount of interest income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_InterestIncomeMaximumPercentageOfPaidInKind_lbl" xml:lang="en-US">Interest Income, Maximum Percentage of Paid in Kind</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_InterestIncomeMaximumPercentageOfPaidInKind_lbl" xml:lang="en-US">Interest income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfPartnersCapitalAbstract" xlink:label="us-gaap_StatementOfPartnersCapitalAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfPartnersCapitalAbstract" xlink:to="us-gaap_StatementOfPartnersCapitalAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfPartnersCapitalAbstract_lbl" xml:lang="en-US">Statement of Changes in Partners' Capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnerCapitalComponentsAxis" xlink:label="us-gaap_PartnerCapitalComponentsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnerCapitalComponentsAxis" xlink:to="us-gaap_PartnerCapitalComponentsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnerCapitalComponentsAxis_lbl" xml:lang="en-US">Partner Capital Components [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnerCapitalComponentsDomain" xlink:label="us-gaap_PartnerCapitalComponentsDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnerCapitalComponentsDomain" xlink:to="us-gaap_PartnerCapitalComponentsDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnerCapitalComponentsDomain_lbl" xml:lang="en-US">Partner Capital Components [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LimitedPartnerMember" xlink:label="us-gaap_LimitedPartnerMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnerMember" xlink:to="us-gaap_LimitedPartnerMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LimitedPartnerMember_lbl" xml:lang="en-US">Limited Partners</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAccountContributions" xlink:label="us-gaap_PartnersCapitalAccountContributions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAccountContributions" xlink:to="us-gaap_PartnersCapitalAccountContributions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAccountContributions_lbl" xml:lang="en-US">Partners Capital Account Contributions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PartnersCapitalAccountContributions_lbl" xml:lang="en-US">Addition of 63,400,000, 30,400,000 and 86,500,000 partnership shares, respectively</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAccountRedemptions" xlink:label="us-gaap_PartnersCapitalAccountRedemptions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAccountRedemptions" xlink:to="us-gaap_PartnersCapitalAccountRedemptions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAccountRedemptions_lbl" xml:lang="en-US">Partners Capital Account Redemptions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PartnersCapitalAccountRedemptions_lbl" xml:lang="en-US">Redemption of (63,200,000), (45,500,000) and (67,700,000) partnership shares, respectively</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net Income (Loss) Attributable to Parent, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net Income (Loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GeneralPartnerMember" xlink:label="us-gaap_GeneralPartnerMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralPartnerMember" xlink:to="us-gaap_GeneralPartnerMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralPartnerMember_lbl" xml:lang="en-US">General Partner</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAccountUnitsContributed" xlink:label="us-gaap_PartnersCapitalAccountUnitsContributed" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAccountUnitsContributed" xlink:to="us-gaap_PartnersCapitalAccountUnitsContributed_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAccountUnitsContributed_lbl" xml:lang="en-US">Partners Capital Account Units Contributed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PartnersCapitalAccountUnitsContributed_lbl" xml:lang="en-US">Addition of partnership units</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAccountUnitsRedeemed" xlink:label="us-gaap_PartnersCapitalAccountUnitsRedeemed" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAccountUnitsRedeemed" xlink:to="us-gaap_PartnersCapitalAccountUnitsRedeemed_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAccountUnitsRedeemed_lbl" xml:lang="en-US">Partners Capital Account Units Redeemed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PartnersCapitalAccountUnitsRedeemed_lbl" xml:lang="en-US">Redemption of partnership units</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US">Statements of Cash Flows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Cash Flows from Operating Activities:</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US">Net income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts" xlink:label="us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts" xlink:to="us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts_lbl" xml:lang="en-US">Unrealized Gain (Loss) on Derivatives and Commodity Contracts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts_lbl" xml:lang="en-US">Change in unrealized (gain) loss on open commodity futures contracts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts_lbl" xml:lang="en-US">Change in unrealized gain (loss) on open positions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDividendsReceivable" xlink:label="us-gaap_IncreaseDecreaseInDividendsReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDividendsReceivable" xlink:to="us-gaap_IncreaseDecreaseInDividendsReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDividendsReceivable_lbl" xml:lang="en-US">Increase Decrease In Dividends Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="us-gaap_IncreaseDecreaseInDividendsReceivable_lbl" xml:lang="en-US">(Increase) decrease in dividends receivable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet" xlink:label="us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet" xlink:to="us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_lbl" xml:lang="en-US">Increase (Decrease) in Accrued Interest Receivable, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_lbl" xml:lang="en-US">(Increase) decrease in interest receivable</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_IncreaseDecreaseInPrepaidInsuranceOperatingActivities" xlink:label="ung_IncreaseDecreaseInPrepaidInsuranceOperatingActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_IncreaseDecreaseInPrepaidInsuranceOperatingActivities" xlink:to="ung_IncreaseDecreaseInPrepaidInsuranceOperatingActivities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_IncreaseDecreaseInPrepaidInsuranceOperatingActivities_lbl" xml:lang="en-US">Amount of increase (decrease) in prepaid insurance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_IncreaseDecreaseInPrepaidInsuranceOperatingActivities_lbl" xml:lang="en-US">Increase (Decrease) In Prepaid Insurance, Operating Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ung_IncreaseDecreaseInPrepaidInsuranceOperatingActivities_lbl" xml:lang="en-US">(Increase) decrease in prepaid insurance</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:to="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US">Increase (Decrease) in Prepaid Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US">(Increase) decrease in prepaid registration fees</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOtherReceivables" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherReceivables" xlink:to="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" xml:lang="en-US">Increase (Decrease) in Other Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" xml:lang="en-US">(Increase) decrease in ETF transaction fees receivable</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_IncreaseDecreaseManagementFeesPayable" xlink:label="ung_IncreaseDecreaseManagementFeesPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_IncreaseDecreaseManagementFeesPayable" xlink:to="ung_IncreaseDecreaseManagementFeesPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_IncreaseDecreaseManagementFeesPayable_lbl" xml:lang="en-US">Amount of net change in management fee payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_IncreaseDecreaseManagementFeesPayable_lbl" xml:lang="en-US">Increase Decrease Management Fees Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_IncreaseDecreaseManagementFeesPayable_lbl" xml:lang="en-US">Increase (decrease) in General Partner management fees payable</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_IncreaseDecreaseInProfessionalFeesPayable" xlink:label="ung_IncreaseDecreaseInProfessionalFeesPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_IncreaseDecreaseInProfessionalFeesPayable" xlink:to="ung_IncreaseDecreaseInProfessionalFeesPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_IncreaseDecreaseInProfessionalFeesPayable_lbl" xml:lang="en-US">The increase (decrease) during the reporting period in professional fees payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_IncreaseDecreaseInProfessionalFeesPayable_lbl" xml:lang="en-US">Increase Decrease In Professional Fees Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_IncreaseDecreaseInProfessionalFeesPayable_lbl" xml:lang="en-US">Increase (decrease) in professional fees payable</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_IncreaseDecreaseInBrokerageCommissionsPayable" xlink:label="ung_IncreaseDecreaseInBrokerageCommissionsPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_IncreaseDecreaseInBrokerageCommissionsPayable" xlink:to="ung_IncreaseDecreaseInBrokerageCommissionsPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_IncreaseDecreaseInBrokerageCommissionsPayable_lbl" xml:lang="en-US">The increase (decrease) during the reporting period in the aggregate amount of obligations incurred arising from transactions with broker-dealers, such as amounts due on margin and unsettled cash transactions; includes payables to brokers and dealers.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_IncreaseDecreaseInBrokerageCommissionsPayable_lbl" xml:lang="en-US">Increase Decrease In Brokerage Commissions Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_IncreaseDecreaseInBrokerageCommissionsPayable_lbl" xml:lang="en-US">Increase (decrease) in brokerage commissions payable</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_IncreaseDecreaseInDirectorsFeesPayable" xlink:label="ung_IncreaseDecreaseInDirectorsFeesPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_IncreaseDecreaseInDirectorsFeesPayable" xlink:to="ung_IncreaseDecreaseInDirectorsFeesPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_IncreaseDecreaseInDirectorsFeesPayable_lbl" xml:lang="en-US">The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_IncreaseDecreaseInDirectorsFeesPayable_lbl" xml:lang="en-US">Increase Decrease In Directors Fees Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_IncreaseDecreaseInDirectorsFeesPayable_lbl" xml:lang="en-US">Increase (decrease) in directors' fees payable</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_IncreaseDecreaseInLicenseFeesPayable" xlink:label="ung_IncreaseDecreaseInLicenseFeesPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_IncreaseDecreaseInLicenseFeesPayable" xlink:to="ung_IncreaseDecreaseInLicenseFeesPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_IncreaseDecreaseInLicenseFeesPayable_lbl" xml:lang="en-US">The increase (decrease) during the reporting period in the aggregate amount of fees payable related with license.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_IncreaseDecreaseInLicenseFeesPayable_lbl" xml:lang="en-US">Increase Decrease In License Fees Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_IncreaseDecreaseInLicenseFeesPayable_lbl" xml:lang="en-US">Increase (decrease) in license fees payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDueToRelatedParties" xlink:label="us-gaap_IncreaseDecreaseInDueToRelatedParties" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDueToRelatedParties" xlink:to="us-gaap_IncreaseDecreaseInDueToRelatedParties_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDueToRelatedParties_lbl" xml:lang="en-US">Increase (Decrease) in Due to Related Parties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInDueToRelatedParties_lbl" xml:lang="en-US">Increase (decrease) in related party payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US">Net cash provided by (used in) operating activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US">Cash Flows from Financing Activities:</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromPartnershipContribution" xlink:label="us-gaap_ProceedsFromPartnershipContribution" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromPartnershipContribution" xlink:to="us-gaap_ProceedsFromPartnershipContribution_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromPartnershipContribution_lbl" xml:lang="en-US">Proceeds From Partnership Contribution</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromPartnershipContribution_lbl" xml:lang="en-US">Addition of partnership shares</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_PaymentsToPartnershipRedemption" xlink:label="ung_PaymentsToPartnershipRedemption" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_PaymentsToPartnershipRedemption" xlink:to="ung_PaymentsToPartnershipRedemption_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_PaymentsToPartnershipRedemption_lbl" xml:lang="en-US">The cash outflow from the capital redeemed in cash from a partner in a partnership during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_PaymentsToPartnershipRedemption_lbl" xml:lang="en-US">Payments To Partnership Redemption</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="ung_PaymentsToPartnershipRedemption_lbl" xml:lang="en-US">Redemption of partnership shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US">Net cash provided by (used in) financing activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xml:lang="en-US">Cash and Cash Equivalents, Period Increase (Decrease), Total.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xml:lang="en-US">Net Increase (Decrease) in Cash and Cash Equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US">Cash And Cash Equivalents And Equity In Trading Accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US">Total Cash, Cash Equivalents and Equity in Trading Accounts, end of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US">Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of year</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_lbl" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_lbl" xml:lang="en-US">Components of Cash and Cash Equivalents:</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_EquityInTradingAccountsAbstract" xlink:label="ung_EquityInTradingAccountsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_EquityInTradingAccountsAbstract" xlink:to="ung_EquityInTradingAccountsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_EquityInTradingAccountsAbstract_lbl" xml:lang="en-US">Not available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_EquityInTradingAccountsAbstract_lbl" xml:lang="en-US">Equity In Trading Accounts [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_EquityInTradingAccountsAbstract_lbl" xml:lang="en-US">Equity in Trading Accounts:</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_CashAndCashEquivalentsInTradingAccounts" xlink:label="ung_CashAndCashEquivalentsInTradingAccounts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_CashAndCashEquivalentsInTradingAccounts" xlink:to="ung_CashAndCashEquivalentsInTradingAccounts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_CashAndCashEquivalentsInTradingAccounts_lbl" xml:lang="en-US">The amount of cash and cash equivalents in trading accounts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_CashAndCashEquivalentsInTradingAccounts_lbl" xml:lang="en-US">Cash and Cash Equivalents in Trading Accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_CashAndCashEquivalentsInTradingAccounts_lbl" xml:lang="en-US">Cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_CashAndCashEquivalentsInEquityInTradingAccounts" xlink:label="ung_CashAndCashEquivalentsInEquityInTradingAccounts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_CashAndCashEquivalentsInEquityInTradingAccounts" xlink:to="ung_CashAndCashEquivalentsInEquityInTradingAccounts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_CashAndCashEquivalentsInEquityInTradingAccounts_lbl" xml:lang="en-US">The amount of cash and cash equivalents in equity in trading accounts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_CashAndCashEquivalentsInEquityInTradingAccounts_lbl" xml:lang="en-US">Cash And Cash Equivalents In Equity In Trading Accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ung_CashAndCashEquivalentsInEquityInTradingAccounts_lbl" xml:lang="en-US">Total Cash, Cash Equivalents and Equity in Trading Accounts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xml:lang="en-US">ORGANIZATION AND BUSINESS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xml:lang="en-US">Organization, Consolidation and Presentation Of Financial Statements Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xml:lang="en-US">ORGANIZATION AND BUSINESS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US">Significant Accounting Policies [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FeesPaidByFundAndRelatedPartyTransactionsAbstract" xlink:label="ung_FeesPaidByFundAndRelatedPartyTransactionsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FeesPaidByFundAndRelatedPartyTransactionsAbstract" xlink:to="ung_FeesPaidByFundAndRelatedPartyTransactionsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FeesPaidByFundAndRelatedPartyTransactionsAbstract_lbl" xml:lang="en-US">FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock" xlink:to="ung_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock_lbl" xml:lang="en-US">Fees Paid and Related Party Transactions Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock_lbl" xml:lang="en-US">Fees Paid and Related Party Transactions Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock_lbl" xml:lang="en-US">FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractorsAbstract" xlink:label="us-gaap_ContractorsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractorsAbstract" xlink:to="us-gaap_ContractorsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ContractorsAbstract_lbl" xml:lang="en-US">CONTRACTS AND AGREEMENTS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractsOrProgramsDisclosureTextBlock" xlink:label="us-gaap_LongTermContractsOrProgramsDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermContractsOrProgramsDisclosureTextBlock" xlink:to="us-gaap_LongTermContractsOrProgramsDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermContractsOrProgramsDisclosureTextBlock_lbl" xml:lang="en-US">Long-term Contracts or Programs Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermContractsOrProgramsDisclosureTextBlock_lbl" xml:lang="en-US">CONTRACTS AND AGREEMENTS</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract" xlink:label="ung_FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract" xlink:to="ung_FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract_lbl" xml:lang="en-US">FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialInstrumentsDisclosureTextBlock" xlink:label="us-gaap_FinancialInstrumentsDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancialInstrumentsDisclosureTextBlock" xlink:to="us-gaap_FinancialInstrumentsDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinancialInstrumentsDisclosureTextBlock_lbl" xml:lang="en-US">Financial Instruments Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinancialInstrumentsDisclosureTextBlock_lbl" xml:lang="en-US">FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FinancialsHighlightsAbstract" xlink:label="ung_FinancialsHighlightsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FinancialsHighlightsAbstract" xlink:to="ung_FinancialsHighlightsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_FinancialsHighlightsAbstract_lbl" xml:lang="en-US">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FinancialsHighlightsAbstract_lbl" xml:lang="en-US">FINANCIAL HIGHLIGHTS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalFinancialInformationDisclosureTextBlock" xlink:label="us-gaap_AdditionalFinancialInformationDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalFinancialInformationDisclosureTextBlock" xlink:to="us-gaap_AdditionalFinancialInformationDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalFinancialInformationDisclosureTextBlock_lbl" xml:lang="en-US">Additional Financial Information Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdditionalFinancialInformationDisclosureTextBlock_lbl" xml:lang="en-US">FINANCIAL HIGHLIGHTS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:label="us-gaap_QuarterlyFinancialInformationDisclosureAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:to="us-gaap_QuarterlyFinancialInformationDisclosureAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_QuarterlyFinancialInformationDisclosureAbstract_lbl" xml:lang="en-US">QUARTERLY FINANCIAL DATA (Unaudited)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_QuarterlyFinancialInformationTextBlock" xlink:to="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" xml:lang="en-US">Quarterly Financial Information [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" xml:lang="en-US">QUARTERLY FINANCIAL DATA (Unaudited)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="us-gaap_FairValueDisclosuresAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueDisclosuresAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xml:lang="en-US">FAIR VALUE OF FINANCIAL INSTRUMENTS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="us-gaap_FairValueDisclosuresTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresTextBlock" xlink:to="us-gaap_FairValueDisclosuresTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xml:lang="en-US">Fair Value Disclosures [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xml:lang="en-US">FAIR VALUE OF FINANCIAL INSTRUMENTS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="us-gaap_SubsequentEventsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsAbstract" xlink:to="us-gaap_SubsequentEventsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xml:lang="en-US">SUBSEQUENT EVENTS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsTextBlock" xlink:to="us-gaap_SubsequentEventsTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US">Subsequent Events [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US">SUBSEQUENT EVENTS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US">Basis of Presentation and Significant Accounting Policies [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US">Basis of Presentation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionPolicyTextBlock" xlink:to="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US">Revenue Recognition, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US">Revenue Recognition</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommissionsPolicy" xlink:label="us-gaap_CommissionsPolicy" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommissionsPolicy" xlink:to="us-gaap_CommissionsPolicy_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommissionsPolicy_lbl" xml:lang="en-US">Commissions, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommissionsPolicy_lbl" xml:lang="en-US">Brokerage Commissions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="us-gaap_IncomeTaxPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xml:lang="en-US">Income Tax, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xml:lang="en-US">Income Taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharesSubjectToMandatoryRedemptionChangesInRedemptionValuePolicyTextBlock" xlink:label="us-gaap_SharesSubjectToMandatoryRedemptionChangesInRedemptionValuePolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesSubjectToMandatoryRedemptionChangesInRedemptionValuePolicyTextBlock" xlink:to="us-gaap_SharesSubjectToMandatoryRedemptionChangesInRedemptionValuePolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesSubjectToMandatoryRedemptionChangesInRedemptionValuePolicyTextBlock_lbl" xml:lang="en-US">Shares Subject to Mandatory Redemption, Changes in Redemption Value, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharesSubjectToMandatoryRedemptionChangesInRedemptionValuePolicyTextBlock_lbl" xml:lang="en-US">Creations and Redemptions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncentiveDistributionPolicyManagingMemberOrGeneralPartnerDescription" xlink:label="us-gaap_IncentiveDistributionPolicyManagingMemberOrGeneralPartnerDescription" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncentiveDistributionPolicyManagingMemberOrGeneralPartnerDescription" xlink:to="us-gaap_IncentiveDistributionPolicyManagingMemberOrGeneralPartnerDescription_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncentiveDistributionPolicyManagingMemberOrGeneralPartnerDescription_lbl" xml:lang="en-US">Incentive Distribution Policy, Managing Member or General Partner, Description [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncentiveDistributionPolicyManagingMemberOrGeneralPartnerDescription_lbl" xml:lang="en-US">Partnership Capital and Allocation of Partnership Income and Losses</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_NetAssetValuePolicyTextBlock" xlink:label="ung_NetAssetValuePolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_NetAssetValuePolicyTextBlock" xlink:to="ung_NetAssetValuePolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_NetAssetValuePolicyTextBlock_lbl" xml:lang="en-US">Disclosure of accounting policy for net asset value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_NetAssetValuePolicyTextBlock_lbl" xml:lang="en-US">Net Asset Value [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_NetAssetValuePolicyTextBlock_lbl" xml:lang="en-US">Calculation of Per Share NAV</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US">Earnings Per Share, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US">Net Income (Loss) Per Share</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_OtherOperatingIncomeExpensePolicyTextBlock" xlink:label="ung_OtherOperatingIncomeExpensePolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_OtherOperatingIncomeExpensePolicyTextBlock" xlink:to="ung_OtherOperatingIncomeExpensePolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_OtherOperatingIncomeExpensePolicyTextBlock_lbl" xml:lang="en-US">Disclosure of accounting policy for other operating income (expense).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_OtherOperatingIncomeExpensePolicyTextBlock_lbl" xml:lang="en-US">Other Operating Income Expense [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_OtherOperatingIncomeExpensePolicyTextBlock_lbl" xml:lang="en-US">Offering Costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US">Cash and Cash Equivalents, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US">Cash Equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:to="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" xml:lang="en-US">Reclassification, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" xml:lang="en-US">Reclassification</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UseOfEstimates" xlink:label="us-gaap_UseOfEstimates" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UseOfEstimates" xlink:to="us-gaap_UseOfEstimates_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US">Use of Estimates, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US">Use of Estimates</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_OtherSignificantAccountingAndReportingPoliciesPolicyTextBlock" xlink:label="ung_OtherSignificantAccountingAndReportingPoliciesPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_OtherSignificantAccountingAndReportingPoliciesPolicyTextBlock" xlink:to="ung_OtherSignificantAccountingAndReportingPoliciesPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_OtherSignificantAccountingAndReportingPoliciesPolicyTextBlock_lbl" xml:lang="en-US">Other Significant Accounting and Reporting Policies, Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_OtherSignificantAccountingAndReportingPoliciesPolicyTextBlock_lbl" xml:lang="en-US">Other Significant Accounting And Reporting Policies [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_OtherSignificantAccountingAndReportingPoliciesPolicyTextBlock_lbl" xml:lang="en-US">Other</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_BrokerageCommissionsTableTextBlock" xlink:label="ung_BrokerageCommissionsTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_BrokerageCommissionsTableTextBlock" xlink:to="ung_BrokerageCommissionsTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_BrokerageCommissionsTableTextBlock_lbl" xml:lang="en-US">Tabular disclosure of brokerage commissions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_BrokerageCommissionsTableTextBlock_lbl" xml:lang="en-US">Brokerage Commissions [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_BrokerageCommissionsTableTextBlock_lbl" xml:lang="en-US">Summary of brokerage commissions</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock" xlink:label="ung_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock" xlink:to="ung_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock_lbl" xml:lang="en-US">Tabular disclosure of per unit performance data and other supplemental financial data.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock_lbl" xml:lang="en-US">Per Unit Performance Data and Other Supplemental Financial Data [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock_lbl" xml:lang="en-US">Summary of per share performance data and other supplemental financial data</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:to="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xml:lang="en-US">Quarterly Financial Information [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xml:lang="en-US">Summary of quarterly financial information</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" xml:lang="en-US">Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" xml:lang="en-US">Summary of valuation of securities using fair value hierarchy</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:to="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xml:lang="en-US">Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xml:lang="en-US">Summary of fair value of derivative instruments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock" xlink:to="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_lbl" xml:lang="en-US">Derivative Instruments, Gain (Loss) [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_lbl" xml:lang="en-US">Summary of the effect of derivative instruments on the statements of operation</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" xlink:label="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" xlink:to="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_lbl" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements Disclosure [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_lbl" xml:lang="en-US">Organization Consolidation and Presentation Of Financial Statements Disclosure [Table]</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_CreationBasketsMember" xlink:label="ung_CreationBasketsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_CreationBasketsMember" xlink:to="ung_CreationBasketsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_CreationBasketsMember_lbl" xml:lang="en-US">Represents the information relating to creation baskets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_CreationBasketsMember_lbl" xml:lang="en-US">Creation Baskets [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_CreationBasketsMember_lbl" xml:lang="en-US">Creation Baskets</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_RedemptionBasketsMember" xlink:label="ung_RedemptionBasketsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_RedemptionBasketsMember" xlink:to="ung_RedemptionBasketsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_RedemptionBasketsMember_lbl" xml:lang="en-US">This member stands for information pertaining to redemption baskets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_RedemptionBasketsMember_lbl" xml:lang="en-US">Redemption Baskets [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_RedemptionBasketsMember_lbl" xml:lang="en-US">Redemption Baskets</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" xlink:label="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" xlink:to="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_lbl" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements Disclosure</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_lbl" xml:lang="en-US">Organization Consolidation and Presentation Of Financial Statements Disclosure [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_lbl" xml:lang="en-US">ORGANIZATION AND BUSINESS</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_NumberOfSuccessiveValuationDays" xlink:label="ung_NumberOfSuccessiveValuationDays" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_NumberOfSuccessiveValuationDays" xlink:to="ung_NumberOfSuccessiveValuationDays_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_NumberOfSuccessiveValuationDays_lbl" xml:lang="en-US">Number of successive valuation days over which the average daily percentage change in the fund's NAV will be considered for achieving the entity's investment objective, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_NumberOfSuccessiveValuationDays_lbl" xml:lang="en-US">Number Of Successive Valuation Days</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_NumberOfSuccessiveValuationDays_lbl" xml:lang="en-US">Number of successive valuation days</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered" xlink:label="ung_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered" xlink:to="ung_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered_lbl" xml:lang="en-US">Average daily percentage change in the price of the Benchmark Futures Contract considered for determining the average daily percentage change in the fund's NAV for achieving the entity's investment objective.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered_lbl" xml:lang="en-US">Average Daily Percentage Change In Price Of Benchmark Futures Contract Considered</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered_lbl" xml:lang="en-US">Average daily percentage change in the price of the Benchmark Futures Contract considered</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_NumberOfUnitsPerBasket" xlink:label="ung_NumberOfUnitsPerBasket" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_NumberOfUnitsPerBasket" xlink:to="ung_NumberOfUnitsPerBasket_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_NumberOfUnitsPerBasket_lbl" xml:lang="en-US">Number of units per Basket.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_NumberOfUnitsPerBasket_lbl" xml:lang="en-US">Number Of Units Per Basket</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_NumberOfUnitsPerBasket_lbl" xml:lang="en-US">Number of units per basket</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FeePaidPerOrder" xlink:label="ung_FeePaidPerOrder" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FeePaidPerOrder" xlink:to="ung_FeePaidPerOrder_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_FeePaidPerOrder_lbl" xml:lang="en-US">The amount of fee paid per order.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FeePaidPerOrder_lbl" xml:lang="en-US">Fee Paid Per Order</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_FeePaidPerOrder_lbl" xml:lang="en-US">Fee paid by authorized participants for each order placed to create one or more Creation Baskets or to redeem one or more baskets</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_NumberOfUnitsRegisteredInPeriod" xlink:label="ung_NumberOfUnitsRegisteredInPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_NumberOfUnitsRegisteredInPeriod" xlink:to="ung_NumberOfUnitsRegisteredInPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_NumberOfUnitsRegisteredInPeriod_lbl" xml:lang="en-US">Number of initially registered shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_NumberOfUnitsRegisteredInPeriod_lbl" xml:lang="en-US">Number Of Units Registered In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_NumberOfUnitsRegisteredInPeriod_lbl" xml:lang="en-US">Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_StockholdersEquityNoteStockSplitReverseConversionRatio" xlink:label="ung_StockholdersEquityNoteStockSplitReverseConversionRatio" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_StockholdersEquityNoteStockSplitReverseConversionRatio" xlink:to="ung_StockholdersEquityNoteStockSplitReverseConversionRatio_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_StockholdersEquityNoteStockSplitReverseConversionRatio_lbl" xml:lang="en-US">Ratio of applied to the conversion of reverse stock split, for example but not limited to, one share converted to two or two shares converted to one.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_StockholdersEquityNoteStockSplitReverseConversionRatio_lbl" xml:lang="en-US">Stockholders' Equity Note, Stock Split, Reverse Conversion Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_StockholdersEquityNoteStockSplitReverseConversionRatio_lbl" xml:lang="en-US">Reverse share split</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_UnitsIssuedDuringPeriodUnitsNewIssues" xlink:label="ung_UnitsIssuedDuringPeriodUnitsNewIssues" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_UnitsIssuedDuringPeriodUnitsNewIssues" xlink:to="ung_UnitsIssuedDuringPeriodUnitsNewIssues_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_UnitsIssuedDuringPeriodUnitsNewIssues_lbl" xml:lang="en-US">Number of shares issued during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_UnitsIssuedDuringPeriodUnitsNewIssues_lbl" xml:lang="en-US">Units Issued During Period Units New Issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_UnitsIssuedDuringPeriodUnitsNewIssues_lbl" xml:lang="en-US">Number of units issued</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_UnitsIssuedDuringPeriodValueNewIssues" xlink:label="ung_UnitsIssuedDuringPeriodValueNewIssues" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_UnitsIssuedDuringPeriodValueNewIssues" xlink:to="ung_UnitsIssuedDuringPeriodValueNewIssues_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_UnitsIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Amount received from the issuance of new shares during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_UnitsIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Units Issued During Period Value New Issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_UnitsIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Value of unit issued</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_NumberOfRegisteredUnits" xlink:label="ung_NumberOfRegisteredUnits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_NumberOfRegisteredUnits" xlink:to="ung_NumberOfRegisteredUnits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_NumberOfRegisteredUnits_lbl" xml:lang="en-US">Number of shares registered.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_NumberOfRegisteredUnits_lbl" xml:lang="en-US">Number Of Registered Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_NumberOfRegisteredUnits_lbl" xml:lang="en-US">Number of registered units</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_SignificantAccountingPoliciesTable" xlink:label="ung_SignificantAccountingPoliciesTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_SignificantAccountingPoliciesTable" xlink:to="ung_SignificantAccountingPoliciesTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_SignificantAccountingPoliciesTable_lbl" xml:lang="en-US">Significant Accounting Policies [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_SignificantAccountingPoliciesTable_lbl" xml:lang="en-US">Significant Accounting Policies [Table]</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_SignificantAccountingPoliciesLineItems" xlink:label="ung_SignificantAccountingPoliciesLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_SignificantAccountingPoliciesLineItems" xlink:to="ung_SignificantAccountingPoliciesLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_SignificantAccountingPoliciesLineItems_lbl" xml:lang="en-US">Significant Accounting Policies [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_SignificantAccountingPoliciesLineItems_lbl" xml:lang="en-US">Significant Accounting Policies [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_SignificantAccountingPoliciesLineItems_lbl" xml:lang="en-US">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_lbl" xml:lang="en-US">Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_lbl" xml:lang="en-US">Amount of interest expense or penalties recognized</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FeesPaidAndRelatedPartyTransactionsTable" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FeesPaidAndRelatedPartyTransactionsTable" xlink:to="ung_FeesPaidAndRelatedPartyTransactionsTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsTable_lbl" xml:lang="en-US">Fees Paid and Related Party Transactions [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsTable_lbl" xml:lang="en-US">Fees Paid and Related Party Transactions [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="us-gaap_FinancialInstrumentAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancialInstrumentAxis" xlink:to="us-gaap_FinancialInstrumentAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xml:lang="en-US">Financial Instrument [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xml:lang="en-US">Financial Instruments [Domain]</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_UnitedStatesOilFundLimitedPartnershipMember" xlink:label="ung_UnitedStatesOilFundLimitedPartnershipMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_UnitedStatesOilFundLimitedPartnershipMember" xlink:to="ung_UnitedStatesOilFundLimitedPartnershipMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_UnitedStatesOilFundLimitedPartnershipMember_lbl" xml:lang="en-US">This member stands for information pertaining to united states oil fund lp.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_UnitedStatesOilFundLimitedPartnershipMember_lbl" xml:lang="en-US">United States Oil Fund LP [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_UnitedStatesOilFundLimitedPartnershipMember_lbl" xml:lang="en-US">United States Oil Fund LP</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis" xlink:label="us-gaap_TypeOfArrangementAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TypeOfArrangementAxis" xlink:to="us-gaap_TypeOfArrangementAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xml:lang="en-US">Type of Arrangement and Non-arrangement Transactions [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xml:lang="en-US">Arrangements and Non-arrangement Transactions [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LicensingAgreementsMember" xlink:label="us-gaap_LicensingAgreementsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LicensingAgreementsMember" xlink:to="us-gaap_LicensingAgreementsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LicensingAgreementsMember_lbl" xml:lang="en-US">Licensing Agreements [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LicensingAgreementsMember_lbl" xml:lang="en-US">Licensing Agreements</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FundTrustsMember" xlink:label="ung_FundTrustsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FundTrustsMember" xlink:to="ung_FundTrustsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_FundTrustsMember_lbl" xml:lang="en-US">This member stands for information pertaining to fund trust.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FundTrustsMember_lbl" xml:lang="en-US">Fund Trusts [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_FundTrustsMember_lbl" xml:lang="en-US">UNG and the Related Public Funds</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_UnitedStatesNaturalGasMember" xlink:label="ung_UnitedStatesNaturalGasMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_UnitedStatesNaturalGasMember" xlink:to="ung_UnitedStatesNaturalGasMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_UnitedStatesNaturalGasMember_lbl" xml:lang="en-US">This member stands for information pertaining to united states natural gas.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_UnitedStatesNaturalGasMember_lbl" xml:lang="en-US">United States Natural Gas [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_UnitedStatesNaturalGasMember_lbl" xml:lang="en-US">UNG</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FeesPaidAndRelatedPartyTransactionsLineItems" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FeesPaidAndRelatedPartyTransactionsLineItems" xlink:to="ung_FeesPaidAndRelatedPartyTransactionsLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsLineItems_lbl" xml:lang="en-US">Fees Paid and Related Party Transactions [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsLineItems_lbl" xml:lang="en-US">Fees Paid and Related Party Transactions [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_FeesPaidAndRelatedPartyTransactionsLineItems_lbl" xml:lang="en-US">FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_BaseFeeAmountMaximumAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage" xlink:label="ung_BaseFeeAmountMaximumAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_BaseFeeAmountMaximumAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage" xlink:to="ung_BaseFeeAmountMaximumAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_BaseFeeAmountMaximumAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage_lbl" xml:lang="en-US">Percentage of fee obligated to pay by UNG on maximum average daily total net assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_BaseFeeAmountMaximumAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage_lbl" xml:lang="en-US">Base Fee Amount, Maximum Average Daily Total Net Assets of $1,000,000,000, Base Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_BaseFeeAmountMaximumAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage_lbl" xml:lang="en-US">Monthly fee obligated to pay on average daily total net assets, maximum base fee 1,000,000,000 (as a percentage)</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_AssetsUnderManagementAverageDailyBalanceBaseAmountForFeePercentage" xlink:label="ung_AssetsUnderManagementAverageDailyBalanceBaseAmountForFeePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_AssetsUnderManagementAverageDailyBalanceBaseAmountForFeePercentage" xlink:to="ung_AssetsUnderManagementAverageDailyBalanceBaseAmountForFeePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_AssetsUnderManagementAverageDailyBalanceBaseAmountForFeePercentage_lbl" xml:lang="en-US">Amount of daily average total net assets outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_AssetsUnderManagementAverageDailyBalanceBaseAmountForFeePercentage_lbl" xml:lang="en-US">Assets under Management, Average Daily Balance, Base Amount For Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_AssetsUnderManagementAverageDailyBalanceBaseAmountForFeePercentage_lbl" xml:lang="en-US">Average daily total net assets</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_BaseFeeAmountGreaterThanAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage" xlink:label="ung_BaseFeeAmountGreaterThanAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_BaseFeeAmountGreaterThanAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage" xlink:to="ung_BaseFeeAmountGreaterThanAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_BaseFeeAmountGreaterThanAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage_lbl" xml:lang="en-US">Percentage of fee obligated to pay by UNG that are greater than average daily total net assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_BaseFeeAmountGreaterThanAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage_lbl" xml:lang="en-US">Base Fee Amount, Greater Than Average Daily Total Net Assets of $1,000,000,000, Base Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_BaseFeeAmountGreaterThanAverageDailyTotalNetAssetsOf1000000000BaseFeePercentage_lbl" xml:lang="en-US">Monthly fee obligated to pay on average daily total net assets (as a percentage)</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_BaseFeePercentage" xlink:label="ung_BaseFeePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_BaseFeePercentage" xlink:to="ung_BaseFeePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_BaseFeePercentage_lbl" xml:lang="en-US">Percentage of base fee.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_BaseFeePercentage_lbl" xml:lang="en-US">Base Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_BaseFeePercentage_lbl" xml:lang="en-US">Fee percentage</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_RegistrationFeesAndOtherOfferingExpenses" xlink:label="ung_RegistrationFeesAndOtherOfferingExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_RegistrationFeesAndOtherOfferingExpenses" xlink:to="ung_RegistrationFeesAndOtherOfferingExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_RegistrationFeesAndOtherOfferingExpenses_lbl" xml:lang="en-US">The amount of registration fees and offering expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_RegistrationFeesAndOtherOfferingExpenses_lbl" xml:lang="en-US">Registration Fees And Other Offering Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_RegistrationFeesAndOtherOfferingExpenses_lbl" xml:lang="en-US">Registration fees and offering expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherGeneralExpense" xlink:label="us-gaap_OtherGeneralExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherGeneralExpense" xlink:to="us-gaap_OtherGeneralExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherGeneralExpense_lbl" xml:lang="en-US">Other General Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherGeneralExpense_lbl" xml:lang="en-US">Investor tax reporting cost</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_ContractsAndAgreementsTable" xlink:label="ung_ContractsAndAgreementsTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_ContractsAndAgreementsTable" xlink:to="ung_ContractsAndAgreementsTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_ContractsAndAgreementsTable_lbl" xml:lang="en-US">Schedule of contracts and agreements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_ContractsAndAgreementsTable_lbl" xml:lang="en-US">CONTRACTS AND AGREEMENTS [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xml:lang="en-US">Class of Stock [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_ClassOfStockDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfStockDomain_lbl" xml:lang="en-US">Class of Stock [Domain]</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_RebalancingInvestmentsTransactionMember" xlink:label="ung_RebalancingInvestmentsTransactionMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_RebalancingInvestmentsTransactionMember" xlink:to="ung_RebalancingInvestmentsTransactionMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_RebalancingInvestmentsTransactionMember_lbl" xml:lang="en-US">Represents the information relating to rebalancing investments transaction.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_RebalancingInvestmentsTransactionMember_lbl" xml:lang="en-US">Rebalancing Investments Transaction [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_RebalancingInvestmentsTransactionMember_lbl" xml:lang="en-US">Rebalancing Investments Transaction</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_TradesNecessitatedByCreationAndRedemptionActivityMember" xlink:label="ung_TradesNecessitatedByCreationAndRedemptionActivityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_TradesNecessitatedByCreationAndRedemptionActivityMember" xlink:to="ung_TradesNecessitatedByCreationAndRedemptionActivityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_TradesNecessitatedByCreationAndRedemptionActivityMember_lbl" xml:lang="en-US">Represents the information relating to creation and redemption activity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_TradesNecessitatedByCreationAndRedemptionActivityMember_lbl" xml:lang="en-US">Creation And Redemption Activity [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_TradesNecessitatedByCreationAndRedemptionActivityMember_lbl" xml:lang="en-US">Creation And Redemption Activity</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_ContractsAndAgreementsLineItems" xlink:label="ung_ContractsAndAgreementsLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_ContractsAndAgreementsLineItems" xlink:to="ung_ContractsAndAgreementsLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_ContractsAndAgreementsLineItems_lbl" xml:lang="en-US">Line items represents the information pertaining to contracts and agreements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_ContractsAndAgreementsLineItems_lbl" xml:lang="en-US">CONTRACTS AND AGREEMENTS [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_ContractsAndAgreementsLineItems_lbl" xml:lang="en-US">CONTRACTS AND AGREEMENTS</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_PercentageOfAverageDailyNetAssets" xlink:label="ung_PercentageOfAverageDailyNetAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_PercentageOfAverageDailyNetAssets" xlink:to="ung_PercentageOfAverageDailyNetAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_PercentageOfAverageDailyNetAssets_lbl" xml:lang="en-US">Percentage of average daily net assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_PercentageOfAverageDailyNetAssets_lbl" xml:lang="en-US">Percentage of Average Daily Net Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_PercentageOfAverageDailyNetAssets_lbl" xml:lang="en-US">Percentage of commissions accrued</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_MarketingAgreementMember" xlink:label="ung_MarketingAgreementMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_MarketingAgreementMember" xlink:to="ung_MarketingAgreementMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_MarketingAgreementMember_lbl" xml:lang="en-US">Represents the information relating to marketing agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_MarketingAgreementMember_lbl" xml:lang="en-US">Marketing Agreement [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_MarketingAgreementMember_lbl" xml:lang="en-US">Marketing Agreement</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_GroupThreeMember" xlink:label="ung_GroupThreeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_GroupThreeMember" xlink:to="ung_GroupThreeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_GroupThreeMember_lbl" xml:lang="en-US">Represents the information relating to assets up to three billion.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_GroupThreeMember_lbl" xml:lang="en-US">USNG's assets up to $3 billion [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_GroupThreeMember_lbl" xml:lang="en-US">USNG's assets up to $3 billion</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_GroupFourMember" xlink:label="ung_GroupFourMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_GroupFourMember" xlink:to="ung_GroupFourMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_GroupFourMember_lbl" xml:lang="en-US">Represents the information relating to assets in excess of three billion.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_GroupFourMember_lbl" xml:lang="en-US">USNG's assets in excess of $3 billion [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_GroupFourMember_lbl" xml:lang="en-US">USNG's assets in excess of $3 billion</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RangeAxis_lbl" xml:lang="en-US">Range [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember" xlink:label="srt_RangeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeMember" xlink:to="srt_RangeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RangeMember_lbl" xml:lang="en-US">Range [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MaximumMember_lbl" xml:lang="en-US">Maximum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="srt_MaximumMember_lbl" xml:lang="en-US">Maximum</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember" xlink:label="srt_MinimumMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MinimumMember_lbl" xml:lang="en-US">Minimum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="srt_MinimumMember_lbl" xml:lang="en-US">Minimum</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_BasisAmountForFeePercentage" xlink:label="ung_BasisAmountForFeePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_BasisAmountForFeePercentage" xlink:to="ung_BasisAmountForFeePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_BasisAmountForFeePercentage_lbl" xml:lang="en-US">Amount of base fee.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_BasisAmountForFeePercentage_lbl" xml:lang="en-US">Basis Amount For Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_BasisAmountForFeePercentage_lbl" xml:lang="en-US">Base amount for determining fee percentage</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_CommissionsPaid" xlink:label="ung_CommissionsPaid" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_CommissionsPaid" xlink:to="ung_CommissionsPaid_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_CommissionsPaid_lbl" xml:lang="en-US">Amount of commissions paid.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_CommissionsPaid_lbl" xml:lang="en-US">Commissions Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_CommissionsPaid_lbl" xml:lang="en-US">Commissions per round-turn trade, including applicable exchange and NFA fees for Futures Contracts and options on Futures Contracts</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FlatFeesPaid" xlink:label="ung_FlatFeesPaid" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FlatFeesPaid" xlink:to="ung_FlatFeesPaid_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_FlatFeesPaid_lbl" xml:lang="en-US">Percentage of flat fees paid.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FlatFeesPaid_lbl" xml:lang="en-US">Flat Fees Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_FlatFeesPaid_lbl" xml:lang="en-US">Percentage of flat fee</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_PercentageOfTotalNetAssets" xlink:label="ung_PercentageOfTotalNetAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_PercentageOfTotalNetAssets" xlink:to="ung_PercentageOfTotalNetAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_PercentageOfTotalNetAssets_lbl" xml:lang="en-US">Percentage of total net assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_PercentageOfTotalNetAssets_lbl" xml:lang="en-US">Percentage of Total Net Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_PercentageOfTotalNetAssets_lbl" xml:lang="en-US">Percentage of total net assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable" xlink:label="us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable" xlink:to="us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable_lbl" xml:lang="en-US">Schedule of Fair Value, Off-balance Sheet Risks [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems" xlink:label="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems" xlink:to="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems_lbl" xml:lang="en-US">Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems_lbl" xml:lang="en-US">Fair Value, Off-balance Sheet Risks, Disclosure Information</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MoneyMarketFundsAtCarryingValue" xlink:label="us-gaap_MoneyMarketFundsAtCarryingValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MoneyMarketFundsAtCarryingValue" xlink:to="us-gaap_MoneyMarketFundsAtCarryingValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MoneyMarketFundsAtCarryingValue_lbl" xml:lang="en-US">Money Market Funds, at Carrying Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MoneyMarketFundsAtCarryingValue_lbl" xml:lang="en-US">Investments in money market funds</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_CashDepositsAndInvestmentsInTreasuries" xlink:label="ung_CashDepositsAndInvestmentsInTreasuries" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_CashDepositsAndInvestmentsInTreasuries" xlink:to="ung_CashDepositsAndInvestmentsInTreasuries_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_CashDepositsAndInvestmentsInTreasuries_lbl" xml:lang="en-US">The amount of cash deposits and investments in Treasuries with the custodian and FCMs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_CashDepositsAndInvestmentsInTreasuries_lbl" xml:lang="en-US">Cash Deposits And Investments In Treasuries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_CashDepositsAndInvestmentsInTreasuries_lbl" xml:lang="en-US">Cash deposits and investments in Treasuries</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPartnersCapitalRollForward" xlink:label="us-gaap_IncreaseDecreaseInPartnersCapitalRollForward" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPartnersCapitalRollForward" xlink:to="us-gaap_IncreaseDecreaseInPartnersCapitalRollForward_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPartnersCapitalRollForward_lbl" xml:lang="en-US">Increase (Decrease) in Partners Capital [Roll Forward]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncreaseDecreaseInPartnersCapitalRollForward_lbl" xml:lang="en-US">Per Share Operating Performance:</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_TotalIncomeLossPerUnit" xlink:label="ung_TotalIncomeLossPerUnit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_TotalIncomeLossPerUnit" xlink:to="ung_TotalIncomeLossPerUnit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_TotalIncomeLossPerUnit_lbl" xml:lang="en-US">Per unit of total income (loss).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_TotalIncomeLossPerUnit_lbl" xml:lang="en-US">Total Income Loss Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ung_TotalIncomeLossPerUnit_lbl" xml:lang="en-US">Total income (loss)</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_TotalExpensesPerUnit" xlink:label="ung_TotalExpensesPerUnit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_TotalExpensesPerUnit" xlink:to="ung_TotalExpensesPerUnit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_TotalExpensesPerUnit_lbl" xml:lang="en-US">Per unit of total expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_TotalExpensesPerUnit_lbl" xml:lang="en-US">Total Expenses Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ung_TotalExpensesPerUnit_lbl" xml:lang="en-US">Total expenses</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_IncreaseDecreaseInNetAssetValuePerUnit" xlink:label="ung_IncreaseDecreaseInNetAssetValuePerUnit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_IncreaseDecreaseInNetAssetValuePerUnit" xlink:to="ung_IncreaseDecreaseInNetAssetValuePerUnit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_IncreaseDecreaseInNetAssetValuePerUnit_lbl" xml:lang="en-US">Per unit of increase (decrease) in net asset value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_IncreaseDecreaseInNetAssetValuePerUnit_lbl" xml:lang="en-US">Increase Decrease In Net Asset Value Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ung_IncreaseDecreaseInNetAssetValuePerUnit_lbl" xml:lang="en-US">Net increase (decrease) in net asset value</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_RateOfReturnOnAverageAsset" xlink:label="ung_RateOfReturnOnAverageAsset" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_RateOfReturnOnAverageAsset" xlink:to="ung_RateOfReturnOnAverageAsset_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_RateOfReturnOnAverageAsset_lbl" xml:lang="en-US">Percentage of rate of return on average asset.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_RateOfReturnOnAverageAsset_lbl" xml:lang="en-US">Rate of Return On Average Asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_RateOfReturnOnAverageAsset_lbl" xml:lang="en-US">Total Return</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_AverageNetAssetsAbstract" xlink:label="ung_AverageNetAssetsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_AverageNetAssetsAbstract" xlink:to="ung_AverageNetAssetsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_AverageNetAssetsAbstract_lbl" xml:lang="en-US">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_AverageNetAssetsAbstract_lbl" xml:lang="en-US">Average Net Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_AverageNetAssetsAbstract_lbl" xml:lang="en-US">Ratios to Average Net Assets</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_PercentageOfTotalRevenue" xlink:label="ung_PercentageOfTotalRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_PercentageOfTotalRevenue" xlink:to="ung_PercentageOfTotalRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_PercentageOfTotalRevenue_lbl" xml:lang="en-US">Percentage of total revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_PercentageOfTotalRevenue_lbl" xml:lang="en-US">Percentage of Total Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_PercentageOfTotalRevenue_lbl" xml:lang="en-US">Total income (loss)</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_ManagementIncentiveFeePercentage" xlink:label="ung_ManagementIncentiveFeePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_ManagementIncentiveFeePercentage" xlink:to="ung_ManagementIncentiveFeePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_ManagementIncentiveFeePercentage_lbl" xml:lang="en-US">Percentage of management incentive fee.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_ManagementIncentiveFeePercentage_lbl" xml:lang="en-US">Management Incentive Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_ManagementIncentiveFeePercentage_lbl" xml:lang="en-US">Management fees</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_TotalExpensesExcludingManagementFeesPercent" xlink:label="ung_TotalExpensesExcludingManagementFeesPercent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_TotalExpensesExcludingManagementFeesPercent" xlink:to="ung_TotalExpensesExcludingManagementFeesPercent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_TotalExpensesExcludingManagementFeesPercent_lbl" xml:lang="en-US">Percentage of total expenses excluding management fees.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_TotalExpensesExcludingManagementFeesPercent_lbl" xml:lang="en-US">Total Expenses Excluding Management Fees Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ung_TotalExpensesExcludingManagementFeesPercent_lbl" xml:lang="en-US">Total expenses excluding management fees</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_PercentageOfConsolidatedNetIncomeLoss" xlink:label="ung_PercentageOfConsolidatedNetIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_PercentageOfConsolidatedNetIncomeLoss" xlink:to="ung_PercentageOfConsolidatedNetIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_PercentageOfConsolidatedNetIncomeLoss_lbl" xml:lang="en-US">Percentage of consolidated net income (loss).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_PercentageOfConsolidatedNetIncomeLoss_lbl" xml:lang="en-US">Percentage of Consolidated Net Income Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ung_PercentageOfConsolidatedNetIncomeLoss_lbl" xml:lang="en-US">Net income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax" xlink:to="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax_lbl" xml:lang="en-US">Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax_lbl" xml:lang="en-US">Net Income (Loss) per Share</label>
    <loc xlink:type="locator" xlink:href="ung-20221231.xsd#ung_FairValueOfFinancialInstrumentsTable" xlink:label="ung_FairValueOfFinancialInstrumentsTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ung_FairValueOfFinancialInstrumentsTable" xlink:to="ung_FairValueOfFinancialInstrumentsTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ung_FairValueOfFinancialInstrumentsTable_lbl" xml:lang="en-US">Schedule of information about fair value of financial instruments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ung_FairValueOfFinancialInstrumentsTable_lbl" xml:lang="en-US">FAIR VALUE OF FINANCIAL INSTRUMENTS [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US">Fair Value Hierarchy and NAV [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US">Fair Value Hierarchy and NAV [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="us-gaap_FairValueInputsLevel1Member" />
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