<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:83a984b0-8a20-4bb4-90c4-383bae28c72e,g:9b2ff90f-117d-47bd-8f3b-e14bacb51cd3-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:ddd="http://www.3dsystems.com/20251231" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.3dsystems.com/20251231">
  <xs:import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cyd-af-sub/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-af-sub-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ddd-20251231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ddd-20251231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ddd-20251231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ddd-20251231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="CoverPage" roleURI="http://www.3dsystems.com/role/CoverPage">
        <link:definition>0000001 - Document - Cover Page</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AuditInformation" roleURI="http://www.3dsystems.com/role/AuditInformation">
        <link:definition>0000002 - Document - Audit Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.3dsystems.com/role/ConsolidatedBalanceSheets">
        <link:definition>9952151 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.3dsystems.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>9952152 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofOperations" roleURI="http://www.3dsystems.com/role/ConsolidatedStatementsofOperations">
        <link:definition>9952153 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofComprehensiveIncomeLoss" roleURI="http://www.3dsystems.com/role/ConsolidatedStatementsofComprehensiveIncomeLoss">
        <link:definition>9952154 - Statement - Consolidated Statements of Comprehensive Income (Loss)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofCashFlows" roleURI="http://www.3dsystems.com/role/ConsolidatedStatementsofCashFlows">
        <link:definition>9952155 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofCashFlowsParenthetical" roleURI="http://www.3dsystems.com/role/ConsolidatedStatementsofCashFlowsParenthetical">
        <link:definition>9952156 - Statement - Consolidated Statements of Cash Flows (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedstatementofStockholdersEquity" roleURI="http://www.3dsystems.com/role/ConsolidatedstatementofStockholdersEquity">
        <link:definition>9952157 - Statement - Consolidated statement of Stockholder's Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedstatementofStockholdersEquityParenthetical" roleURI="http://www.3dsystems.com/role/ConsolidatedstatementofStockholdersEquityParenthetical">
        <link:definition>9952158 - Statement - Consolidated statement of Stockholder's Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OVERVIEWANDBASISOFPRESENTATION" roleURI="http://www.3dsystems.com/role/OVERVIEWANDBASISOFPRESENTATION">
        <link:definition>9952159 - Disclosure - OVERVIEW AND BASIS OF PRESENTATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIES" roleURI="http://www.3dsystems.com/role/SIGNIFICANTACCOUNTINGPOLICIES">
        <link:definition>9952160 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DIVESTITURES" roleURI="http://www.3dsystems.com/role/DIVESTITURES">
        <link:definition>9952161 - Disclosure - DIVESTITURES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUES" roleURI="http://www.3dsystems.com/role/REVENUES">
        <link:definition>9952162 - Disclosure - REVENUES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVENTORIES" roleURI="http://www.3dsystems.com/role/INVENTORIES">
        <link:definition>9952163 - Disclosure - INVENTORIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROPERTYANDEQUIPMENT" roleURI="http://www.3dsystems.com/role/PROPERTYANDEQUIPMENT">
        <link:definition>9952164 - Disclosure - PROPERTY AND EQUIPMENT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLESASSETS" roleURI="http://www.3dsystems.com/role/INTANGIBLESASSETS">
        <link:definition>9952165 - Disclosure - INTANGIBLES ASSETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GOODWILL" roleURI="http://www.3dsystems.com/role/GOODWILL">
        <link:definition>9952166 - Disclosure - GOODWILL</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVESTMENTSANDNOTERECEIVABLE" roleURI="http://www.3dsystems.com/role/INVESTMENTSANDNOTERECEIVABLE">
        <link:definition>9952167 - Disclosure - INVESTMENTS AND NOTE RECEIVABLE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASES" roleURI="http://www.3dsystems.com/role/LEASES">
        <link:definition>9952168 - Disclosure - LEASES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCRUEDANDOTHERLIABILITIES" roleURI="http://www.3dsystems.com/role/ACCRUEDANDOTHERLIABILITIES">
        <link:definition>9952169 - Disclosure - ACCRUED AND OTHER LIABILITIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BORROWINGS" roleURI="http://www.3dsystems.com/role/BORROWINGS">
        <link:definition>9952170 - Disclosure - BORROWINGS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITS" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITS">
        <link:definition>9952171 - Disclosure - EMPLOYEEE BENEFITS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REDEEMABLENONCONTROLLINGINTEREST" roleURI="http://www.3dsystems.com/role/REDEEMABLENONCONTROLLINGINTEREST">
        <link:definition>9952172 - Disclosure - REDEEMABLE NON-CONTROLLING INTEREST</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATION" roleURI="http://www.3dsystems.com/role/STOCKBASEDCOMPENSATION">
        <link:definition>9952173 - Disclosure - STOCK-BASED COMPENSATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXES" roleURI="http://www.3dsystems.com/role/INCOMETAXES">
        <link:definition>9952174 - Disclosure - INCOME TAXES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NETINCOMELOSSPERSHARE" roleURI="http://www.3dsystems.com/role/NETINCOMELOSSPERSHARE">
        <link:definition>9952175 - Disclosure - NET INCOME (LOSS) PER SHARE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCUMULATEDOTHERCOMPREHENSIVELOSS" roleURI="http://www.3dsystems.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSS">
        <link:definition>9952176 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATION" roleURI="http://www.3dsystems.com/role/SEGMENTINFORMATION">
        <link:definition>9952177 - Disclosure - SEGMENT INFORMATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="COMMITMENTSANDCONTINGENCIES" roleURI="http://www.3dsystems.com/role/COMMITMENTSANDCONTINGENCIES">
        <link:definition>9952178 - Disclosure - COMMITMENTS AND CONTINGENCIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTS" roleURI="http://www.3dsystems.com/role/FAIRVALUEMEASUREMENTS">
        <link:definition>9952179 - Disclosure - FAIR VALUE MEASUREMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDEXITACTIVITIESCOSTS" roleURI="http://www.3dsystems.com/role/RESTRUCTURINGANDEXITACTIVITIESCOSTS">
        <link:definition>9952180 - Disclosure - RESTRUCTURING AND EXIT ACTIVITIES COSTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIESPolicies" roleURI="http://www.3dsystems.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies">
        <link:definition>9955511 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIESTables" roleURI="http://www.3dsystems.com/role/SIGNIFICANTACCOUNTINGPOLICIESTables">
        <link:definition>9955512 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DIVESTITURESTables" roleURI="http://www.3dsystems.com/role/DIVESTITURESTables">
        <link:definition>9955513 - Disclosure - DIVESTITURES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESTables" roleURI="http://www.3dsystems.com/role/REVENUESTables">
        <link:definition>9955514 - Disclosure - REVENUES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVENTORIESTables" roleURI="http://www.3dsystems.com/role/INVENTORIESTables">
        <link:definition>9955515 - Disclosure - INVENTORIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROPERTYANDEQUIPMENTTables" roleURI="http://www.3dsystems.com/role/PROPERTYANDEQUIPMENTTables">
        <link:definition>9955516 - Disclosure - PROPERTY AND EQUIPMENT (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLESASSETSTables" roleURI="http://www.3dsystems.com/role/INTANGIBLESASSETSTables">
        <link:definition>9955517 - Disclosure - INTANGIBLES ASSETS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GOODWILLTables" roleURI="http://www.3dsystems.com/role/GOODWILLTables">
        <link:definition>9955518 - Disclosure - GOODWILL (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVESTMENTSANDNOTERECEIVABLETables" roleURI="http://www.3dsystems.com/role/INVESTMENTSANDNOTERECEIVABLETables">
        <link:definition>9955519 - Disclosure - INVESTMENTS AND NOTE RECEIVABLE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESTables" roleURI="http://www.3dsystems.com/role/LEASESTables">
        <link:definition>9955520 - Disclosure - LEASES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCRUEDANDOTHERLIABILITIESTables" roleURI="http://www.3dsystems.com/role/ACCRUEDANDOTHERLIABILITIESTables">
        <link:definition>9955521 - Disclosure - ACCRUED AND OTHER LIABILITIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BORROWINGSTables" roleURI="http://www.3dsystems.com/role/BORROWINGSTables">
        <link:definition>9955522 - Disclosure - BORROWINGS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITSTables" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITSTables">
        <link:definition>9955523 - Disclosure - EMPLOYEEE BENEFITS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REDEEMABLENONCONTROLLINGINTERESTTables" roleURI="http://www.3dsystems.com/role/REDEEMABLENONCONTROLLINGINTERESTTables">
        <link:definition>9955524 - Disclosure - REDEEMABLE NON-CONTROLLING INTEREST (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONTables" roleURI="http://www.3dsystems.com/role/STOCKBASEDCOMPENSATIONTables">
        <link:definition>9955525 - Disclosure - STOCK-BASED COMPENSATION (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESTables" roleURI="http://www.3dsystems.com/role/INCOMETAXESTables">
        <link:definition>9955526 - Disclosure - INCOME TAXES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NETINCOMELOSSPERSHARETables" roleURI="http://www.3dsystems.com/role/NETINCOMELOSSPERSHARETables">
        <link:definition>9955527 - Disclosure - NET INCOME (LOSS) PER SHARE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCUMULATEDOTHERCOMPREHENSIVELOSSTables" roleURI="http://www.3dsystems.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSTables">
        <link:definition>9955528 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONTables" roleURI="http://www.3dsystems.com/role/SEGMENTINFORMATIONTables">
        <link:definition>9955529 - Disclosure - SEGMENT INFORMATION (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSTables" roleURI="http://www.3dsystems.com/role/FAIRVALUEMEASUREMENTSTables">
        <link:definition>9955530 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDEXITACTIVITIESCOSTSTables" roleURI="http://www.3dsystems.com/role/RESTRUCTURINGANDEXITACTIVITIESCOSTSTables">
        <link:definition>9955531 - Disclosure - RESTRUCTURING AND EXIT ACTIVITIES COSTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OVERVIEWANDBASISOFPRESENTATIONDetails" roleURI="http://www.3dsystems.com/role/OVERVIEWANDBASISOFPRESENTATIONDetails">
        <link:definition>9955532 - Disclosure - OVERVIEW AND BASIS OF PRESENTATION (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails" roleURI="http://www.3dsystems.com/role/SIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails">
        <link:definition>9955533 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIESScheduleofAllowanceforCreditLossesDetails" roleURI="http://www.3dsystems.com/role/SIGNIFICANTACCOUNTINGPOLICIESScheduleofAllowanceforCreditLossesDetails">
        <link:definition>9955534 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Schedule of Allowance for Credit Losses) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIESScheduleofPropertyandEquipmentDetails" roleURI="http://www.3dsystems.com/role/SIGNIFICANTACCOUNTINGPOLICIESScheduleofPropertyandEquipmentDetails">
        <link:definition>9955535 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Schedule of Property and Equipment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DIVESTITURESNarrativeDetails" roleURI="http://www.3dsystems.com/role/DIVESTITURESNarrativeDetails">
        <link:definition>9955536 - Disclosure - DIVESTITURES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DIVESTITURESScheduleofCarryingValueofRevenueDetails" roleURI="http://www.3dsystems.com/role/DIVESTITURESScheduleofCarryingValueofRevenueDetails">
        <link:definition>9955537 - Disclosure - DIVESTITURES (Schedule of Carrying Value of Revenue) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DIVESTITURESScheduleofComponentsofAssetsandLiabilitiesHeldforSaleDetails" roleURI="http://www.3dsystems.com/role/DIVESTITURESScheduleofComponentsofAssetsandLiabilitiesHeldforSaleDetails">
        <link:definition>9955538 - Disclosure - DIVESTITURES (Schedule of Components of Assets and Liabilities Held for Sale) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESNarrativeDetails" roleURI="http://www.3dsystems.com/role/REVENUESNarrativeDetails">
        <link:definition>9955539 - Disclosure - REVENUES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESNarrativeDetails_1" roleURI="http://www.3dsystems.com/role/REVENUESNarrativeDetails_1">
        <link:definition>9955539 - Disclosure - REVENUES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESScheduleofContractwithCustomerContractAssetContractLiabilityandReceivableDetails" roleURI="http://www.3dsystems.com/role/REVENUESScheduleofContractwithCustomerContractAssetContractLiabilityandReceivableDetails">
        <link:definition>9955540 - Disclosure - REVENUES (Schedule of Contract with Customer, Contract Asset, Contract Liability, and Receivable) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUESScheduleofRevenuebyGeographicRegionDetails" roleURI="http://www.3dsystems.com/role/REVENUESScheduleofRevenuebyGeographicRegionDetails">
        <link:definition>9955541 - Disclosure - REVENUES (Schedule of Revenue by Geographic Region) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVENTORIESScheduleofComponentsOfInventoriesDetails" roleURI="http://www.3dsystems.com/role/INVENTORIESScheduleofComponentsOfInventoriesDetails">
        <link:definition>9955542 - Disclosure - INVENTORIES (Schedule of Components Of Inventories) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVENTORIESNarrativeDetails" roleURI="http://www.3dsystems.com/role/INVENTORIESNarrativeDetails">
        <link:definition>9955543 - Disclosure - INVENTORIES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROPERTYANDEQUIPMENTScheduleofPropertyandEquipmentDetails" roleURI="http://www.3dsystems.com/role/PROPERTYANDEQUIPMENTScheduleofPropertyandEquipmentDetails">
        <link:definition>9955544 - Disclosure - PROPERTY AND EQUIPMENT (Schedule of Property and Equipment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PROPERTYANDEQUIPMENTNarrativeDetails" roleURI="http://www.3dsystems.com/role/PROPERTYANDEQUIPMENTNarrativeDetails">
        <link:definition>9955545 - Disclosure - PROPERTY AND EQUIPMENT (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLESASSETSScheduleofIntangibleAssetsOtherThanGoodwillDetails" roleURI="http://www.3dsystems.com/role/INTANGIBLESASSETSScheduleofIntangibleAssetsOtherThanGoodwillDetails">
        <link:definition>9955546 - Disclosure - INTANGIBLES ASSETS (Schedule of Intangible Assets Other Than Goodwill) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLESASSETSNarrativeDetails" roleURI="http://www.3dsystems.com/role/INTANGIBLESASSETSNarrativeDetails">
        <link:definition>9955547 - Disclosure - INTANGIBLES ASSETS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GOODWILLScheduleofRollForwardDetails" roleURI="http://www.3dsystems.com/role/GOODWILLScheduleofRollForwardDetails">
        <link:definition>9955548 - Disclosure - GOODWILL (Schedule of Roll Forward) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GOODWILLNarrativeDetails" roleURI="http://www.3dsystems.com/role/GOODWILLNarrativeDetails">
        <link:definition>9955549 - Disclosure - GOODWILL (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVESTMENTSANDNOTERECEIVABLEScheduleofEquityInvestmentsDetails" roleURI="http://www.3dsystems.com/role/INVESTMENTSANDNOTERECEIVABLEScheduleofEquityInvestmentsDetails">
        <link:definition>9955550 - Disclosure - INVESTMENTS AND NOTE RECEIVABLE (Schedule of Equity Investments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVESTMENTSANDNOTERECEIVABLENarrativeDetails" roleURI="http://www.3dsystems.com/role/INVESTMENTSANDNOTERECEIVABLENarrativeDetails">
        <link:definition>9955551 - Disclosure - INVESTMENTS AND NOTE RECEIVABLE (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESNarrativeDetails" roleURI="http://www.3dsystems.com/role/LEASESNarrativeDetails">
        <link:definition>9955552 - Disclosure - LEASES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESScheduleofComponentsofLeaseCostDetails" roleURI="http://www.3dsystems.com/role/LEASESScheduleofComponentsofLeaseCostDetails">
        <link:definition>9955553 - Disclosure - LEASES (Schedule of Components of Lease Cost) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESScheduleofFutureMinimumLeasePaymentsDetails" roleURI="http://www.3dsystems.com/role/LEASESScheduleofFutureMinimumLeasePaymentsDetails">
        <link:definition>9955554 - Disclosure - LEASES (Schedule of Future Minimum Lease Payments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESScheduleofFutureMinimumLeasePaymentsDetails_1" roleURI="http://www.3dsystems.com/role/LEASESScheduleofFutureMinimumLeasePaymentsDetails_1">
        <link:definition>9955554 - Disclosure - LEASES (Schedule of Future Minimum Lease Payments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESScheduleofSupplementalCashFlowsDetails" roleURI="http://www.3dsystems.com/role/LEASESScheduleofSupplementalCashFlowsDetails">
        <link:definition>9955555 - Disclosure - LEASES (Schedule of Supplemental Cash Flows) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEASESScheduleofLeaseWeightedAverageDetails" roleURI="http://www.3dsystems.com/role/LEASESScheduleofLeaseWeightedAverageDetails">
        <link:definition>9955556 - Disclosure - LEASES (Schedule of Lease Weighted Average) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCRUEDANDOTHERLIABILITIESScheduleofAccruedLiabilitiesDetails" roleURI="http://www.3dsystems.com/role/ACCRUEDANDOTHERLIABILITIESScheduleofAccruedLiabilitiesDetails">
        <link:definition>9955557 - Disclosure - ACCRUED AND OTHER LIABILITIES (Schedule of Accrued Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCRUEDANDOTHERLIABILITIESScheduleofRecognizedWarrantyRevenueandIncurredWarrantyCostsDetails" roleURI="http://www.3dsystems.com/role/ACCRUEDANDOTHERLIABILITIESScheduleofRecognizedWarrantyRevenueandIncurredWarrantyCostsDetails">
        <link:definition>9955558 - Disclosure - ACCRUED AND OTHER LIABILITIES (Schedule of Recognized Warranty Revenue and Incurred Warranty Costs) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCRUEDANDOTHERLIABILITIESScheduleOfOtherLiabilitiesDetails" roleURI="http://www.3dsystems.com/role/ACCRUEDANDOTHERLIABILITIESScheduleOfOtherLiabilitiesDetails">
        <link:definition>9955559 - Disclosure - ACCRUED AND OTHER LIABILITIES (Schedule Of Other Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BORROWINGSNarrativeDetails" roleURI="http://www.3dsystems.com/role/BORROWINGSNarrativeDetails">
        <link:definition>9955560 - Disclosure - BORROWINGS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BORROWINGSScheduleofConvertibleNotesPayableDetails" roleURI="http://www.3dsystems.com/role/BORROWINGSScheduleofConvertibleNotesPayableDetails">
        <link:definition>9955561 - Disclosure - BORROWINGS (Schedule of Convertible Notes Payable) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITSNarrativeDetails" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITSNarrativeDetails">
        <link:definition>9955562 - Disclosure - EMPLOYEEE BENEFITS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITSScheduleofReconciliationofChangesInProjectedBenefitObligationDetails" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITSScheduleofReconciliationofChangesInProjectedBenefitObligationDetails">
        <link:definition>9955563 - Disclosure - EMPLOYEEE BENEFITS (Schedule of Reconciliation of Changes In Projected Benefit Obligation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITSScheduleofAmountsRecognizedinConsolidatedBalanceSheetsDetails" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITSScheduleofAmountsRecognizedinConsolidatedBalanceSheetsDetails">
        <link:definition>9955564 - Disclosure - EMPLOYEEE BENEFITS (Schedule of Amounts Recognized in Consolidated Balance Sheets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITSScheduleofAccumulatedAndProjectedBenefitObligationsDetails" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITSScheduleofAccumulatedAndProjectedBenefitObligationsDetails">
        <link:definition>9955565 - Disclosure - EMPLOYEEE BENEFITS (Schedule of Accumulated And Projected Benefit Obligations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITSScheduleofComponentsofNetPeriodicBenefitCostsandOtherAmountsRecognizedinOtherComprehensiveIncomeDetails" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITSScheduleofComponentsofNetPeriodicBenefitCostsandOtherAmountsRecognizedinOtherComprehensiveIncomeDetails">
        <link:definition>9955566 - Disclosure - EMPLOYEEE BENEFITS (Schedule of Components of Net Periodic Benefit Costs and Other Amounts Recognized in Other Comprehensive Income) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITSScheduleofAssumptionsUsedtoDetermineBenefitObligationsDetails" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITSScheduleofAssumptionsUsedtoDetermineBenefitObligationsDetails">
        <link:definition>9955567 - Disclosure - EMPLOYEEE BENEFITS (Schedule of Assumptions Used to Determine Benefit Obligations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EMPLOYEEEBENEFITSScheduleofEstimatedFutureBenefitPaymentsDetails" roleURI="http://www.3dsystems.com/role/EMPLOYEEEBENEFITSScheduleofEstimatedFutureBenefitPaymentsDetails">
        <link:definition>9955568 - Disclosure - EMPLOYEEE BENEFITS (Schedule of Estimated Future Benefit Payments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REDEEMABLENONCONTROLLINGINTERESTNarrativeDetails" roleURI="http://www.3dsystems.com/role/REDEEMABLENONCONTROLLINGINTERESTNarrativeDetails">
        <link:definition>9955569 - Disclosure - REDEEMABLE NON-CONTROLLING INTEREST (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REDEEMABLENONCONTROLLINGINTERESTScheduleofRedeemableNoncontrollingInterestDetails" roleURI="http://www.3dsystems.com/role/REDEEMABLENONCONTROLLINGINTERESTScheduleofRedeemableNoncontrollingInterestDetails">
        <link:definition>9955570 - Disclosure - REDEEMABLE NON-CONTROLLING INTEREST (Schedule of Redeemable Noncontrolling Interest) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONNarrativeDetails" roleURI="http://www.3dsystems.com/role/STOCKBASEDCOMPENSATIONNarrativeDetails">
        <link:definition>9955571 - Disclosure - STOCK-BASED COMPENSATION (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONScheduleofSharesandUnitsofRestrictedCommonStockDetails" roleURI="http://www.3dsystems.com/role/STOCKBASEDCOMPENSATIONScheduleofSharesandUnitsofRestrictedCommonStockDetails">
        <link:definition>9955572 - Disclosure - STOCK-BASED COMPENSATION (Schedule of Shares and Units of Restricted Common Stock) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONScheduleofStockOptionActivityDetails" roleURI="http://www.3dsystems.com/role/STOCKBASEDCOMPENSATIONScheduleofStockOptionActivityDetails">
        <link:definition>9955573 - Disclosure - STOCK-BASED COMPENSATION (Schedule of Stock Option Activity) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STOCKBASEDCOMPENSATIONScheduleofStockbasedCompensationExpenseDetails" roleURI="http://www.3dsystems.com/role/STOCKBASEDCOMPENSATIONScheduleofStockbasedCompensationExpenseDetails">
        <link:definition>9955574 - Disclosure - STOCK-BASED COMPENSATION (Schedule of Stock-based Compensation Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESScheduleofComponentsofIncomeBeforeIncomeTaxesDetails" roleURI="http://www.3dsystems.com/role/INCOMETAXESScheduleofComponentsofIncomeBeforeIncomeTaxesDetails">
        <link:definition>9955575 - Disclosure - INCOME TAXES (Schedule of Components of Income Before Income Taxes) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESScheduleofComponentsofIncomeTaxProvisionDetails" roleURI="http://www.3dsystems.com/role/INCOMETAXESScheduleofComponentsofIncomeTaxProvisionDetails">
        <link:definition>9955576 - Disclosure - INCOME TAXES (Schedule of Components of Income Tax Provision) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESScheduleofCashPaidForIncomeTaxesNetOfRefundsDetails" roleURI="http://www.3dsystems.com/role/INCOMETAXESScheduleofCashPaidForIncomeTaxesNetOfRefundsDetails">
        <link:definition>9955577 - Disclosure - INCOME TAXES (Schedule of Cash Paid For Income Taxes (Net Of Refunds)) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESNarrativeDetails" roleURI="http://www.3dsystems.com/role/INCOMETAXESNarrativeDetails">
        <link:definition>9955578 - Disclosure - INCOME TAXES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESScheduleofComponentsofNetDeferredIncomeTaxAssetsandNetDeferredIncomeTaxLiabilitiesDetails" roleURI="http://www.3dsystems.com/role/INCOMETAXESScheduleofComponentsofNetDeferredIncomeTaxAssetsandNetDeferredIncomeTaxLiabilitiesDetails">
        <link:definition>9955579 - Disclosure - INCOME TAXES (Schedule of Components of Net Deferred Income Tax Assets and Net Deferred Income Tax Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESScheduleofUnrecognizedTaxBenefitsDetails" roleURI="http://www.3dsystems.com/role/INCOMETAXESScheduleofUnrecognizedTaxBenefitsDetails">
        <link:definition>9955580 - Disclosure - INCOME TAXES (Schedule of Unrecognized Tax Benefits) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESScheduleofDeferredIncomeTaxAssetValuationAllowanceDetails" roleURI="http://www.3dsystems.com/role/INCOMETAXESScheduleofDeferredIncomeTaxAssetValuationAllowanceDetails">
        <link:definition>9955581 - Disclosure - INCOME TAXES (Schedule of Deferred Income Tax Asset Valuation Allowance) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESScheduleofEffectiveTaxRateReconciliationDetails" roleURI="http://www.3dsystems.com/role/INCOMETAXESScheduleofEffectiveTaxRateReconciliationDetails">
        <link:definition>9955582 - Disclosure - INCOME TAXES (Schedule of Effective Tax Rate Reconciliation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESScheduleofEffectiveTaxRateReconciliationDetails_1" roleURI="http://www.3dsystems.com/role/INCOMETAXESScheduleofEffectiveTaxRateReconciliationDetails_1">
        <link:definition>9955583 - Disclosure - INCOME TAXES (Schedule of Effective Tax Rate Reconciliation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NETINCOMELOSSPERSHAREScheduleofNetLossPerShareReconciliationDetails" roleURI="http://www.3dsystems.com/role/NETINCOMELOSSPERSHAREScheduleofNetLossPerShareReconciliationDetails">
        <link:definition>9955584 - Disclosure - NET INCOME (LOSS) PER SHARE (Schedule of Net Loss Per Share Reconciliation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NETINCOMELOSSPERSHAREScheduleofEquityAwardsDetails" roleURI="http://www.3dsystems.com/role/NETINCOMELOSSPERSHAREScheduleofEquityAwardsDetails">
        <link:definition>9955585 - Disclosure - NET INCOME (LOSS) PER SHARE (Schedule of Equity Awards) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NETINCOMELOSSPERSHARENarrativeDetails" roleURI="http://www.3dsystems.com/role/NETINCOMELOSSPERSHARENarrativeDetails">
        <link:definition>9955586 - Disclosure - NET INCOME (LOSS) PER SHARE (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCUMULATEDOTHERCOMPREHENSIVELOSSDetails" roleURI="http://www.3dsystems.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSDetails">
        <link:definition>9955587 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONNarrativeDetails" roleURI="http://www.3dsystems.com/role/SEGMENTINFORMATIONNarrativeDetails">
        <link:definition>9955588 - Disclosure - SEGMENT INFORMATION (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONScheduleofOperatingResultsbySegmentDetails" roleURI="http://www.3dsystems.com/role/SEGMENTINFORMATIONScheduleofOperatingResultsbySegmentDetails">
        <link:definition>9955589 - Disclosure - SEGMENT INFORMATION (Schedule of Operating Results by Segment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONScheduleofDepreciationandAmortizationDetails" roleURI="http://www.3dsystems.com/role/SEGMENTINFORMATIONScheduleofDepreciationandAmortizationDetails">
        <link:definition>9955590 - Disclosure - SEGMENT INFORMATION (Schedule of Depreciation and Amortization) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONScheduleofLongLivedAssetsbyGeographicRegionDetails" roleURI="http://www.3dsystems.com/role/SEGMENTINFORMATIONScheduleofLongLivedAssetsbyGeographicRegionDetails">
        <link:definition>9955591 - Disclosure - SEGMENT INFORMATION (Schedule of Long-Lived Assets by Geographic Region) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="COMMITMENTSANDCONTINGENCIESDetails" roleURI="http://www.3dsystems.com/role/COMMITMENTSANDCONTINGENCIESDetails">
        <link:definition>9955592 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSScheduleofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" roleURI="http://www.3dsystems.com/role/FAIRVALUEMEASUREMENTSScheduleofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails">
        <link:definition>9955593 - Disclosure - FAIR VALUE MEASUREMENTS (Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSScheduleofFairValueofFinancialInstrumentsDetails" roleURI="http://www.3dsystems.com/role/FAIRVALUEMEASUREMENTSScheduleofFairValueofFinancialInstrumentsDetails">
        <link:definition>9955594 - Disclosure - FAIR VALUE MEASUREMENTS (Schedule of Fair Value of Financial Instruments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSNarrativeDetails" roleURI="http://www.3dsystems.com/role/FAIRVALUEMEASUREMENTSNarrativeDetails">
        <link:definition>9955595 - Disclosure - FAIR VALUE MEASUREMENTS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDEXITACTIVITIESCOSTSNarrativeDetails" roleURI="http://www.3dsystems.com/role/RESTRUCTURINGANDEXITACTIVITIESCOSTSNarrativeDetails">
        <link:definition>9955596 - Disclosure - RESTRUCTURING AND EXIT ACTIVITIES COSTS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDEXITACTIVITIESCOSTSCostsIncurredDetails" roleURI="http://www.3dsystems.com/role/RESTRUCTURINGANDEXITACTIVITIESCOSTSCostsIncurredDetails">
        <link:definition>9955597 - Disclosure - RESTRUCTURING AND EXIT ACTIVITIES COSTS (Costs Incurred) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGANDEXITACTIVITIESCOSTSRestructuringChargesDetails" roleURI="http://www.3dsystems.com/role/RESTRUCTURINGANDEXITACTIVITIESCOSTSRestructuringChargesDetails">
        <link:definition>9955598 - Disclosure - RESTRUCTURING AND EXIT ACTIVITIES COSTS (Restructuring Charges) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="ddd_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ddd_WeightedAverageNumberOfShareOutstandingAbstract" abstract="true" name="WeightedAverageNumberOfShareOutstandingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ddd_RightOfUseAssetObtainedInExchangeForLeaseLiability" abstract="false" name="RightOfUseAssetObtainedInExchangeForLeaseLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_TransferOfEquipmentFromInventoryToPropertyAndEquipmentNet" abstract="false" name="TransferOfEquipmentFromInventoryToPropertyAndEquipmentNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_TradeReceivablesAndLoanReceivable" abstract="false" name="TradeReceivablesAndLoanReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_ExchangeOfAssetsForInvestment" abstract="false" name="ExchangeOfAssetsForInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_ShortTermNonInterestBearingLoanAgreement" abstract="false" name="ShortTermNonInterestBearingLoanAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_SharesIssuedVestedExpiredUnderCompensation" abstract="false" name="SharesIssuedVestedExpiredUnderCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_InvestmentsAndNotesReceivableTextBlock" abstract="false" name="InvestmentsAndNotesReceivableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ddd_DisposalOfAssetsAndLiabilitiesHeldForSalePolicyTextBlock" abstract="false" name="DisposalOfAssetsAndLiabilitiesHeldForSalePolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ddd_ScheduleOfFiniteAndIndefiniteLivedIntangibleAssetsTableTextBlock" abstract="false" name="ScheduleOfFiniteAndIndefiniteLivedIntangibleAssetsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ddd_ScheduleOfRecognizedWarrantyRevenueAndIncurredWarrantyCostsTableTextBlock" abstract="false" name="ScheduleOfRecognizedWarrantyRevenueAndIncurredWarrantyCostsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ddd_ScheduleOfSegmentReportingInformationDepreciationAndAmortizationTableTextBlock" abstract="false" name="ScheduleOfSegmentReportingInformationDepreciationAndAmortizationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ddd_CommonStockVotingRightsVotesPerShare" abstract="false" name="CommonStockVotingRightsVotesPerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_OfficeFurnitureAndEquipmentMember" abstract="false" name="OfficeFurnitureAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_A3DXpertAndOqtonMember" abstract="true" name="A3DXpertAndOqtonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_GeomagicSoftwareMember" abstract="true" name="GeomagicSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_DisposalGroupIncludingDiscontinuedOperationRoyaltyReceivable" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRoyaltyReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DisposalGroupIncludingDiscontinuedOperationRoyaltyReceivableEffectiveInterestRate" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRoyaltyReceivableEffectiveInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_DisposalGroupIncludingDiscontinuedOperationRoyaltyReceivableGross" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRoyaltyReceivableGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DisposalGroupIncludingDiscontinuedOperationRoyaltyReceivableDiscount" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRoyaltyReceivableDiscount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DisposalGroupIncludingDiscontinuedOperationAccruedAndOtherLiabilitiesCurrent" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAccruedAndOtherLiabilitiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_CustomerAMember" abstract="true" name="CustomerAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_CustomerBMember" abstract="true" name="CustomerBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_HealthcareSolutionsMember" abstract="true" name="HealthcareSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance" abstract="false" name="ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_NumberOfCustomers" abstract="false" name="NumberOfCustomers" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_IndustrialSolutionsMember" abstract="true" name="IndustrialSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_IndustrialSegmentMember" abstract="true" name="IndustrialSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_EquityInvestmentsAndSecurities" abstract="false" name="EquityInvestmentsAndSecurities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_SaudiArabianIndustrialInvestmentsCompanyMember" abstract="true" name="SaudiArabianIndustrialInvestmentsCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_TheradaptiveIncMember" abstract="true" name="TheradaptiveIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_EntachInc.Member" abstract="true" name="EntachInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_GenesisTissueInc.Member" abstract="true" name="GenesisTissueInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_HullLegacyMediaCorporationMember" abstract="true" name="HullLegacyMediaCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_EnhatchMember" abstract="true" name="EnhatchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_EquityMethodInvestmentVotingStockPercentage" abstract="false" name="EquityMethodInvestmentVotingStockPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_LesseeTermOfContract" abstract="false" name="LesseeTermOfContract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ddd_LeaseImpairmentLoss" abstract="false" name="LeaseImpairmentLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_CashFlowLesseeAbstract" abstract="true" name="CashFlowLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ddd_WeightedAverageRemainingLeaseTermAbstract" abstract="true" name="WeightedAverageRemainingLeaseTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ddd_LeasesWeightedAverageDiscountRateAbstract" abstract="true" name="LeasesWeightedAverageDiscountRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ddd_DeferredWarrantyRevenue" abstract="false" name="DeferredWarrantyRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_SettlementsMade" abstract="false" name="SettlementsMade" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_AccrualsForWarrantiesIssued" abstract="false" name="AccrualsForWarrantiesIssued" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_OtherLiabilitiesEmployeeIndemnityNoncurrent" abstract="false" name="OtherLiabilitiesEmployeeIndemnityNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_ContractWithCustomerLiabilityDeferredRevenueNoncurrent" abstract="false" name="ContractWithCustomerLiabilityDeferredRevenueNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_ConvertibleSeniorNotesDue2030Member" abstract="true" name="ConvertibleSeniorNotesDue2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_ConvertibleSeniorNotesDue2026Member" abstract="true" name="ConvertibleSeniorNotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_DebtInstrumentCovenantCashBalance" abstract="false" name="DebtInstrumentCovenantCashBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DebtInstrumentCovenantAccountsReceivableAndInventoryBalance" abstract="false" name="DebtInstrumentCovenantAccountsReceivableAndInventoryBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DebtInstrumentCovenantRestrictedCashBalance" abstract="false" name="DebtInstrumentCovenantRestrictedCashBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DebtInstrumentCovenantCashPayments" abstract="false" name="DebtInstrumentCovenantCashPayments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DebtInstrumentPremiumOverClosingPricePercentage" abstract="false" name="DebtInstrumentPremiumOverClosingPricePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_DebtInstrumentConvertedInstrumentTransactionCosts" abstract="false" name="DebtInstrumentConvertedInstrumentTransactionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DebtInstrumentConvertedInstrumentTransactionCostsSharesIssuedForServices" abstract="false" name="DebtInstrumentConvertedInstrumentTransactionCostsSharesIssuedForServices" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ddd_OtherComprehensiveIncomeLossDefinedBenefitPlanAfterReclassificationAdjustmentExcludingTax" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanAfterReclassificationAdjustmentExcludingTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_KumovisGmbHMember" abstract="true" name="KumovisGmbHMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestEquityPercentOfCommonSharesExercisableUponTargetOne" abstract="false" name="RedeemableNoncontrollingInterestEquityPercentOfCommonSharesExercisableUponTargetOne" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestEquityPercentOfCommonSharesExercisableUponTargetTwo" abstract="false" name="RedeemableNoncontrollingInterestEquityPercentOfCommonSharesExercisableUponTargetTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestEquityCommonStockPercentOfExercisePriceToBePaid" abstract="false" name="RedeemableNoncontrollingInterestEquityCommonStockPercentOfExercisePriceToBePaid" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestProfitOrLossTransferAgreementPeriod" abstract="false" name="RedeemableNoncontrollingInterestProfitOrLossTransferAgreementPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestPutOptionExerciseAmount" abstract="false" name="RedeemableNoncontrollingInterestPutOptionExerciseAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestNumberOfInstallmentPayments" abstract="false" name="RedeemableNoncontrollingInterestNumberOfInstallmentPayments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestEquityRollForward" abstract="true" name="RedeemableNoncontrollingInterestEquityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestEquityFairValueAtDateOfAcquisition" abstract="false" name="RedeemableNoncontrollingInterestEquityFairValueAtDateOfAcquisition" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestEquityRedemptionValueInExcessOfCarryingValue" abstract="false" name="RedeemableNoncontrollingInterestEquityRedemptionValueInExcessOfCarryingValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_RedeemableNoncontrollingInterestEquityTranslationAdjustments" abstract="false" name="RedeemableNoncontrollingInterestEquityTranslationAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_RestrictedStockMarketConditionsMember" abstract="true" name="RestrictedStockMarketConditionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_StockOptionsAndRestrictedStockAwardsMember" abstract="false" name="StockOptionsAndRestrictedStockAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_IncentiveAwardsMember" abstract="true" name="IncentiveAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_SystemicBioPhantomUnitPlanMember" abstract="true" name="SystemicBioPhantomUnitPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_TwoThousandFifteenPlanMember" abstract="false" name="TwoThousandFifteenPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_VolumetricBiotechnologiesIncMember" abstract="true" name="VolumetricBiotechnologiesIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_DpPolarGmbHMember" abstract="true" name="DpPolarGmbHMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_ShareBasedCompensationArrangementBySharebasedPaymentAwardNumberOfTranches" abstract="false" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardNumberOfTranches" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_TradingPriceForStockAwardTrancheOne" abstract="false" name="TradingPriceForStockAwardTrancheOne" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ddd_TradingPriceForStockAwardTrancheTwo" abstract="false" name="TradingPriceForStockAwardTrancheTwo" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ddd_StockAwardTrancheGrantingPeriod" abstract="false" name="StockAwardTrancheGrantingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ddd_BusinessCombinationNumberOfMilestones" abstract="false" name="BusinessCombinationNumberOfMilestones" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_BusinessCombinationNumberOfMilestonesTerminated" abstract="false" name="BusinessCombinationNumberOfMilestonesTerminated" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_BusinessCombinationContingentConsiderationReducedLiability" abstract="false" name="BusinessCombinationContingentConsiderationReducedLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_BusinessCombinationNumberOfRemainingMilestones" abstract="false" name="BusinessCombinationNumberOfRemainingMilestones" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_BusinessCombinationNumberOfKeyEmployeesRequiredForMilestone" abstract="false" name="BusinessCombinationNumberOfKeyEmployeesRequiredForMilestone" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNumberOfNonFinancialMilestones" abstract="false" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardNumberOfNonFinancialMilestones" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_ShareBasedPaymentArrangementExpenseEarnoutPaymentMilestone" abstract="false" name="ShareBasedPaymentArrangementExpenseEarnoutPaymentMilestone" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_ShareBasedPaymentArrangementAccruedCompensationExpense" abstract="false" name="ShareBasedPaymentArrangementAccruedCompensationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_ShareBasedPaymentArrangementChangeInEstimateEarningsPerShareBasic" abstract="false" name="ShareBasedPaymentArrangementChangeInEstimateEarningsPerShareBasic" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ddd_ShareBasedPaymentArrangementChangeInEstimateEarningsPerShareDiluted" abstract="false" name="ShareBasedPaymentArrangementChangeInEstimateEarningsPerShareDiluted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ddd_BusinessCombinationConsiderationTransferredToSettleShareIssuedNumberOfShares" abstract="false" name="BusinessCombinationConsiderationTransferredToSettleShareIssuedNumberOfShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ddd_DifferenceInEffectiveIncomeTaxRateAndFederalStatutoryRatePercent" abstract="false" name="DifferenceInEffectiveIncomeTaxRateAndFederalStatutoryRatePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_DeferredTaxAssetsLeasingArrangements" abstract="false" name="DeferredTaxAssetsLeasingArrangements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_DeferredTaxAssetsResearchExpendituresCapitalization" abstract="false" name="DeferredTaxAssetsResearchExpendituresCapitalization" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_ValuationAllowancesAndReservesAdditionsReductionsForChargesToCostAndExpense" abstract="false" name="ValuationAllowancesAndReservesAdditionsReductionsForChargesToCostAndExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationDeferredAdjustmentsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationDeferredAdjustmentsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationTaxDeductibleGoodwillAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxDeductibleGoodwillAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationEquityMethodInvestmentAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationEquityMethodInvestmentAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationImpairmentOfInvestmentsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationImpairmentOfInvestmentsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationPayableAdjustmentsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationPayableAdjustmentsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationDeferredAdjustmentsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationDeferredAdjustmentsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationTaxDeductibleGoodwillPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxDeductibleGoodwillPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationExpiredTaxCreditForeignPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationEquityMethodInvestmentPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationEquityMethodInvestmentPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationImpairmentOfInvestmentsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationImpairmentOfInvestmentsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationPayableAdjustmentsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationPayableAdjustmentsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationChangeInCarryforwardAttributes" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeInCarryforwardAttributes" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationNonDeductibleEarnoutExpensePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNonDeductibleEarnoutExpensePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationDeferredAndPayableAdjustmentsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationDeferredAndPayableAdjustmentsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationNonDeductiblePenaltiesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNonDeductiblePenaltiesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationReturnToProvisionAdjustmentsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationReturnToProvisionAdjustmentsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_RestrictedStockRestrictedStockUnitsAndPSUsMember" abstract="true" name="RestrictedStockRestrictedStockUnitsAndPSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_AccumulatedUnrealizedLossOnShortTermInvestmentAttributableToParentMember" abstract="true" name="AccumulatedUnrealizedLossOnShortTermInvestmentAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_OtherForeignEntitiesMember" abstract="true" name="OtherForeignEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_ExportControlsAndGovernmentContractsComplianceMember" abstract="true" name="ExportControlsAndGovernmentContractsComplianceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_IntrepidAutomationMember" abstract="true" name="IntrepidAutomationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_SecuritiesClassActionMember" abstract="true" name="SecuritiesClassActionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_DirectorateOfDefenseTradeControlsMember" abstract="true" name="DirectorateOfDefenseTradeControlsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_BureauOfIndustryAndSecurityOfTheDepartmentOfCommerceMember" abstract="true" name="BureauOfIndustryAndSecurityOfTheDepartmentOfCommerceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_USDepartmentOfJusticeMember" abstract="true" name="USDepartmentOfJusticeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_LitigationSettlementNumberOfInstallmentPayments" abstract="false" name="LitigationSettlementNumberOfInstallmentPayments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_LitigationSettlementAmountAwardedToOtherPartyPaymentPeriod" abstract="false" name="LitigationSettlementAmountAwardedToOtherPartyPaymentPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ddd_LitigationSettlementSuspendedPenalty" abstract="false" name="LitigationSettlementSuspendedPenalty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_GuarantorObligationsExtensionTerm" abstract="false" name="GuarantorObligationsExtensionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ddd_BusinessCombinationContingentConsiderationLiabilityToBeRecovered" abstract="false" name="BusinessCombinationContingentConsiderationLiabilityToBeRecovered" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ddd_BusinessCombinationContingentConsiderationLiabilityRecoveryNegotiationPeriod" abstract="false" name="BusinessCombinationContingentConsiderationLiabilityRecoveryNegotiationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ddd_BusinessCombinationPendingSettlementNegotiationDays" abstract="false" name="BusinessCombinationPendingSettlementNegotiationDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_LossContingencyPeriodToSubmitComplaintAndResponses" abstract="false" name="LossContingencyPeriodToSubmitComplaintAndResponses" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ddd_GoodwillImpairmentWeightedAverageDiscountRatePercent" abstract="false" name="GoodwillImpairmentWeightedAverageDiscountRatePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ddd_EmployeeSeveranceTerminationBenefitsAndOtherRestructuringMember" abstract="true" name="EmployeeSeveranceTerminationBenefitsAndOtherRestructuringMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ddd_RestructuringAndRelatedCostNumberOfLeasesExited" abstract="false" name="RestructuringAndRelatedCostNumberOfLeasesExited" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ddd_PaymentsToTerminateLease" abstract="false" name="PaymentsToTerminateLease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
