<SEC-DOCUMENT>0001104659-25-058550.txt : 20250611
<SEC-HEADER>0001104659-25-058550.hdr.sgml : 20250611
<ACCEPTANCE-DATETIME>20250611162120
ACCESSION NUMBER:		0001104659-25-058550
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250512
FILED AS OF DATE:		20250611
DATE AS OF CHANGE:		20250611

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Yao Nancy
		CENTRAL INDEX KEY:			0001662969
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-07410
		FILM NUMBER:		251040265

	MAIL ADDRESS:	
		STREET 1:		C/O ABRDN
		STREET 2:		1900 MARKET STREET, SUITE 200
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19103

	FORMER NAME:	
		FORMER CONFORMED NAME:	Maasbach Nancy Yao
		DATE OF NAME CHANGE:	20160106

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			abrdn National Municipal Income Fund
		CENTRAL INDEX KEY:			0000895574
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		ORGANIZATION NAME:           	
		EIN:				411737161
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0330

	BUSINESS ADDRESS:	
		STREET 1:		C/O ABRDN
		STREET 2:		1900 MARKET STREET, SUITE 200
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19103
		BUSINESS PHONE:		215-405-5700

	MAIL ADDRESS:	
		STREET 1:		C/O ABRDN
		STREET 2:		1900 MARKET STREET, SUITE 200
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19103

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Delaware Investments National Municipal Income Fund
		DATE OF NAME CHANGE:	20081209

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DELAWARE INVESTMENTS FLORIDA INSURED MUNICIPAL INCOME FUND
		DATE OF NAME CHANGE:	20020327

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VOYAGEUR FLORIDA INSURED MUNICIPAL INCOME FUND
		DATE OF NAME CHANGE:	19930519
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tm2517653-5_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-05-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000895574</issuerCik>
        <issuerName>abrdn National Municipal Income Fund</issuerName>
        <issuerTradingSymbol>VFL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001662969</rptOwnerCik>
            <rptOwnerName>Yao Nancy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ABRDN</rptOwnerStreet1>
            <rptOwnerStreet2>1900 MARKET STREET, SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>PHILADELPHIA</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19103</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-05-12</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>9.96</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Lucia Sitar, by POA from Nancy Yao</signatureName>
        <signatureDate>2025-06-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
