<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/nport" xmlns:com="http://www.sec.gov/edgar/common" xmlns:ncom="http://www.sec.gov/edgar/nportcommon" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sec.gov/edgar/nport eis_NPORT_Filer.xsd">
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    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000356349</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000024971</seriesId>
        <classId>C000074271</classId>
        <classId>C000074273</classId>
        <classId>C000074272</classId>
        <classId>C000074275</classId>
        <classId>C000074269</classId>
        <classId>C000074270</classId>
        <classId>C000074274</classId>
        <classId>C000074276</classId>
        <classId>C000117929</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
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    <genInfo>
      <regName>MFS SERIES TRUST XIII</regName>
      <regFileNumber>811-03327</regFileNumber>
      <regCik>0000356349</regCik>
      <regLei>5493000SCRZM3WD72S74</regLei>
      <regStreet1>111 HUNTINGTON AVENUE</regStreet1>
      <regStreet2>24TH FLOOR</regStreet2>
      <regCity>BOSTON</regCity>
      <regStateConditional regCountry="US" regState="US-MA"/>
      <regZipOrPostalCode>02199</regZipOrPostalCode>
      <regPhone>617-954-5000</regPhone>
      <seriesName>MFS Global Real Estate Fund</seriesName>
      <seriesId>S000024971</seriesId>
      <seriesLei>ROYDM6SL56ZXYAENS860</seriesLei>
      <repPdEnd>2020-08-31</repPdEnd>
      <repPdDate>2020-05-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
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      <totLiabs>4807049.00</totLiabs>
      <netAssets>1700021403.84</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.00000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.00000000</amtPayOneYrOthAffil>
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      <amtPayAftOneYrBanksBorr>0.00000000</amtPayAftOneYrBanksBorr>
      <amtPayAftOneYrCtrldComp>0.00000000</amtPayAftOneYrCtrldComp>
      <amtPayAftOneYrOthAffil>0.00000000</amtPayAftOneYrOthAffil>
      <amtPayAftOneYrOther>0.00000000</amtPayAftOneYrOther>
      <delayDeliv>0.00000000</delayDeliv>
      <standByCommit>0.00000000</standByCommit>
      <liquidPref>0.00000000</liquidPref>
      <cshNotRptdInCorD>0.00000000</cshNotRptdInCorD>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
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              <instrMon1 netRealizedGain="0.00000000" netUnrealizedAppr="0.00000000"/>
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        </monthlyReturnCats>
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      <mon2Flow redemption="47241396.46000000" reinvestment="0.00000000" sales="65899841.22000000"/>
      <mon3Flow redemption="34169040.87000000" reinvestment="0.00000000" sales="43126156.33000000"/>


    </fundInfo>
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        <name>Rayonier Inc</name>
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        <fairValLevel>1</fairValLevel>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Hysan Development Co Ltd</name>
        <lei>5299007BABFLKIH9HL03</lei>
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        <invCountry>HK</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Goodman Group</name>
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        <invCountry>AU</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
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      </invstOrSec>
      <invstOrSec>
        <name>Shaftesbury PLC</name>
        <lei>213800N7LHKFNTDKAT98</lei>
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        <invCountry>GB</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Swire Properties Ltd</name>
        <lei>5299001L12PHYVQ92465</lei>
        <title>Swire Properties Ltd</title>
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          <isin value="HK0000063609"/>
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        <invCountry>HK</invCountry>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Entra ASA</name>
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        <fairValLevel>2</fairValLevel>
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      <invstOrSec>
        <name>Boardwalk Real Estate Investment Trust</name>
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          <isin value="CA0966311064"/>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Equity LifeStyle Properties Inc</name>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Mapletree Logistics Trust</name>
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        <invCountry>SG</invCountry>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Warehouses De Pauw CVA</name>
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        <invCountry>BE</invCountry>
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        <fairValLevel>2</fairValLevel>
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      <invstOrSec>
        <name>American Tower Corp</name>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>WP Carey Inc</name>
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        <title>WP Carey Inc</title>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Grainger PLC</name>
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        <fairValLevel>2</fairValLevel>
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      <invstOrSec>
        <name>LEG Immobilien AG</name>
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        <invCountry>DE</invCountry>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Corp Inmobiliaria Vesta SAB de CV</name>
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        <name>QTS Realty Trust Inc</name>
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      <invstOrSec>
        <name>Granite Real Estate Investment Trust</name>
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        <invCountry>CA</invCountry>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Hang Lung Properties Ltd</name>
        <lei>529900CIVTNMXQT59E61</lei>
        <title>Hang Lung Properties Ltd</title>
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        <fairValLevel>1</fairValLevel>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Kenedix Inc</name>
        <lei>3538007XCHRIVYCBI985</lei>
        <title>Kenedix Inc</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="JP3281630008"/>
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        <balance>5726900.00000000</balance>
        <units>NS</units>
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        <pctVal>1.830470826997</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>JP</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Host Hotels &amp; Resorts Inc</name>
        <lei>N6EL63S0K3PB1YFTDI24</lei>
        <title>Host Hotels &amp; Resorts Inc</title>
        <cusip>44107P104</cusip>
        <identifiers>
          <isin value="US44107P1049"/>
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        <balance>1387100.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>16561974.00000000</valUSD>
        <pctVal>0.974221498775</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Brixmor Property Group Inc</name>
        <lei>5299007UXW6Y0W2EGZ95</lei>
        <title>Brixmor Property Group Inc</title>
        <cusip>11120U105</cusip>
        <identifiers>
          <isin value="US11120U1051"/>
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        <balance>2007435.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22402974.60000000</valUSD>
        <pctVal>1.317805443472</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Shurgard Self Storage SA</name>
        <lei>549300J0UEIKU81XO336</lei>
        <title>Shurgard Self Storage SA</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="LU1883301340"/>
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        <balance>956081.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="EUR" exchangeRt="0.90086000"/>
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        <pctVal>1.845517836371</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>LU</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>CoreSite Realty Corp</name>
        <lei>549300H0YYORITFM2B74</lei>
        <title>CoreSite Realty Corp</title>
        <cusip>21870Q105</cusip>
        <identifiers>
          <isin value="US21870Q1058"/>
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        <balance>203689.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>25424460.98000000</valUSD>
        <pctVal>1.495537698676</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Advance Residence Investment Corp</name>
        <lei>N/A</lei>
        <title>Advance Residence Investment Corp</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="JP3047160001"/>
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        <balance>10914.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="JPY" exchangeRt="107.84500000"/>
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        <pctVal>1.997202356588</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>JP</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Embassy Office Parks REIT</name>
        <lei>N/A</lei>
        <title>Embassy Office Parks REIT</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="INE041025011"/>
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        <balance>3458200.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="INR" exchangeRt="75.61625000"/>
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        <pctVal>0.889587169069</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>IN</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>UNITE Group PLC/The</name>
        <lei>213800BBUUWVDH9YI827</lei>
        <title>UNITE Group PLC/The</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="GB0006928617"/>
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        <balance>840158.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="GBP" exchangeRt="0.80971700"/>
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        <pctVal>0.530082104827</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>GB</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Mid-America Apartment Communities Inc</name>
        <lei>549300FQZKFR5YNSHZ21</lei>
        <title>Mid-America Apartment Communities Inc</title>
        <cusip>59522J103</cusip>
        <identifiers>
          <isin value="US59522J1034"/>
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        <balance>302037.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>35145025.32000000</valUSD>
        <pctVal>2.067328401902</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Prologis Inc</name>
        <lei>529900DFH19P073LZ636</lei>
        <title>Prologis Inc</title>
        <cusip>74340W103</cusip>
        <identifiers>
          <isin value="US74340W1036"/>
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        <balance>1060210.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>97009215.00000000</valUSD>
        <pctVal>5.706352565966</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Urban Edge Properties</name>
        <lei>N/A</lei>
        <title>Urban Edge Properties</title>
        <cusip>91704F104</cusip>
        <identifiers>
          <isin value="US91704F1049"/>
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        <balance>2657953.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>25915041.75000000</valUSD>
        <pctVal>1.524395027701</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Katitas Co Ltd</name>
        <lei>N/A</lei>
        <title>Katitas Co Ltd</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="JP3932950003"/>
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        <balance>1480300.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="JPY" exchangeRt="107.84500000"/>
        <valUSD>33011465.53000000</valUSD>
        <pctVal>1.941826464974</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>JP</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Helios Towers PLC</name>
        <lei>213800DGC7GS4XCHCU30</lei>
        <title>Helios Towers PLC</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="GB00BJVQC708"/>
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        <balance>11397570.00000000</balance>
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        <currencyConditional curCd="GBP" exchangeRt="0.80971700"/>
        <valUSD>21142139.96000000</valUSD>
        <pctVal>1.243639633727</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>GB</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>MFS Institutional Money Market Portfolio</name>
        <lei>5L2W638H85N8T1136O07</lei>
        <title>MFS Institutional Money Market Portfolio</title>
        <cusip>55291X109</cusip>
        <identifiers>
          <isin value="US55291X1090"/>
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        <balance>38988378.05900000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>38992276.90000000</valUSD>
        <pctVal>2.293634469067</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Deutsche Wohnen SE</name>
        <lei>529900QE24Q67I3FWZ10</lei>
        <title>Deutsche Wohnen SE</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="DE000A0HN5C6"/>
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        <balance>1051272.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="EUR" exchangeRt="0.90086000"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>DE</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Sun Communities Inc</name>
        <lei>549300H5GEOJYN41ZG57</lei>
        <title>Sun Communities Inc</title>
        <cusip>866674104</cusip>
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          <isin value="US8666741041"/>
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        <balance>222791.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>30564697.29000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>ESR CAYMAN LTD</name>
        <lei>549300C81AR42BZUFZ09</lei>
        <title>ESR Cayman Ltd</title>
        <cusip>000000000</cusip>
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          <isin value="KYG319891092"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>KY</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Atrium European Real Estate Ltd</name>
        <lei>213800OJ67K27RCO2J56</lei>
        <title>Atrium European Real Estate Ltd</title>
        <cusip>000000000</cusip>
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        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>JE</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Corporate Office Properties Trust</name>
        <lei>YY1J47X6LF9TYY8JY420</lei>
        <title>Corporate Office Properties Trust</title>
        <cusip>22002T108</cusip>
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          <isin value="US22002T1088"/>
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        <balance>760936.00000000</balance>
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        <curCd>USD</curCd>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Welltower Inc</name>
        <lei>T6IZ0MBEG5ACZDTR7D06</lei>
        <title>Welltower Inc</title>
        <cusip>95040Q104</cusip>
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          <isin value="US95040Q1040"/>
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        <balance>814657.00000000</balance>
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        <curCd>USD</curCd>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Sino Land Co Ltd</name>
        <lei>529900G5P51053HJVZ92</lei>
        <title>Sino Land Co Ltd</title>
        <cusip>000000000</cusip>
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          <isin value="HK0083000502"/>
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        <balance>16116424.00000000</balance>
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        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>HK</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>EPR Properties</name>
        <lei>549300YSSXFHMPOWZ492</lei>
        <title>EPR Properties</title>
        <cusip>26884U109</cusip>
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          <isin value="US26884U1097"/>
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        <balance>321151.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>10138737.07000000</valUSD>
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        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Link REIT</name>
        <lei>529900XUE70U36QX5M62</lei>
        <title>Link REIT</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="HK0823032773"/>
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        <balance>5875305.00000000</balance>
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        <pctVal>2.583709703935</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>HK</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Industrial Logistics Properties Trust</name>
        <lei>N/A</lei>
        <title>Industrial Logistics Properties Trust</title>
        <cusip>456237106</cusip>
        <identifiers>
          <isin value="US4562371066"/>
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        <balance>766490.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>14371687.50000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>National Storage REIT</name>
        <lei>N/A</lei>
        <title>National Storage REIT</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="AU000000NSR2"/>
        </identifiers>
        <balance>39715446.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="AUD" exchangeRt="1.50026300"/>
        <valUSD>49503243.11000000</valUSD>
        <pctVal>2.911918814562</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>AU</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Equinix Inc</name>
        <lei>549300EVUN2BTLJ3GT74</lei>
        <title>Equinix Inc</title>
        <cusip>29444U700</cusip>
        <identifiers>
          <isin value="US29444U7000"/>
        </identifiers>
        <balance>61431.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>42856108.53000000</valUSD>
        <pctVal>2.520915821012</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Medical Properties Trust Inc</name>
        <lei>254900U6E39J1MQCCY14</lei>
        <title>Medical Properties Trust Inc</title>
        <cusip>58463J304</cusip>
        <identifiers>
          <isin value="US58463J3041"/>
        </identifiers>
        <balance>1079513.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>19517595.04000000</valUSD>
        <pctVal>1.148079370995</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Farmland Partners Inc</name>
        <lei>549300LB188CHPZ4IL37</lei>
        <title>Farmland Partners Inc</title>
        <cusip>31154R109</cusip>
        <identifiers>
          <isin value="US31154R1095"/>
        </identifiers>
        <balance>958698.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6615016.20000000</valUSD>
        <pctVal>0.389113700866</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Big Yellow Group PLC</name>
        <lei>213800W7Q4V2ZI8LIW31</lei>
        <title>Big Yellow Group PLC</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="GB0002869419"/>
        </identifiers>
        <balance>2075202.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="GBP" exchangeRt="0.80971700"/>
        <valUSD>25628732.01000000</valUSD>
        <pctVal>1.507553490333</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>GB</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>STORE Capital Corp</name>
        <lei>5493004EA6C9IHDZ7N66</lei>
        <title>STORE Capital Corp</title>
        <cusip>862121100</cusip>
        <identifiers>
          <isin value="US8621211007"/>
        </identifiers>
        <balance>1339172.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>25899586.48000000</valUSD>
        <pctVal>1.523485905618</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>LondonMetric Property PLC</name>
        <lei>213800OCERWWPQDURL87</lei>
        <title>LondonMetric Property PLC</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="GB00B4WFW713"/>
        </identifiers>
        <balance>3714174.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="GBP" exchangeRt="0.80971700"/>
        <valUSD>9623531.49000000</valUSD>
        <pctVal>0.566082960382</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>GB</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Kenedix Office Investment Corp</name>
        <lei>353800FFT483NCIHFY42</lei>
        <title>Kenedix Office Investment Corp</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="JP3046270009"/>
        </identifiers>
        <balance>5589.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="JPY" exchangeRt="107.84500000"/>
        <valUSD>30990977.79000000</valUSD>
        <pctVal>1.822975741364</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>JP</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>VICI Properties Inc</name>
        <lei>254900RKH6RY9KCJQH63</lei>
        <title>VICI Properties Inc</title>
        <cusip>925652109</cusip>
        <identifiers>
          <isin value="US9256521090"/>
        </identifiers>
        <balance>1673341.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>32830950.42000000</valUSD>
        <pctVal>1.931208062783</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Alexandria Real Estate Equities Inc</name>
        <lei>MGCJBT4MKTQBVLNUIS88</lei>
        <title>Alexandria Real Estate Equities Inc</title>
        <cusip>015271109</cusip>
        <identifiers>
          <isin value="US0152711091"/>
        </identifiers>
        <balance>229102.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>35217559.44000000</valUSD>
        <pctVal>2.071595061123</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Japan Logistics Fund Inc</name>
        <lei>3538004KZWISCQO70151</lei>
        <title>Japan Logistics Fund Inc</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="JP3046230003"/>
        </identifiers>
        <balance>15135.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="JPY" exchangeRt="107.84500000"/>
        <valUSD>40207496.87000000</valUSD>
        <pctVal>2.365117096712</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>JP</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Ascendas India Trust</name>
        <lei>N/A</lei>
        <title>Ascendas India Trust</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="SG1V35936920"/>
        </identifiers>
        <balance>31914800.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="SGD" exchangeRt="1.41280000"/>
        <valUSD>32077446.21000000</valUSD>
        <pctVal>1.886884843775</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>SG</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>American Homes 4 Rent</name>
        <lei>549300ZJUO7A58PNUW40</lei>
        <title>American Homes 4 Rent</title>
        <cusip>02665T306</cusip>
        <identifiers>
          <isin value="US02665T3068"/>
        </identifiers>
        <balance>1876042.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>47351300.08000000</valUSD>
        <pctVal>2.785335524190</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Public Storage</name>
        <lei>549300LMZF40TKJ6DM64</lei>
        <title>Public Storage</title>
        <cusip>74460D109</cusip>
        <identifiers>
          <isin value="US74460D1090"/>
        </identifiers>
        <balance>334784.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>67874108.16000000</valUSD>
        <pctVal>3.992544329541</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>STAG Industrial Inc</name>
        <lei>549300QWYX2W6FASVQ07</lei>
        <title>STAG Industrial Inc</title>
        <cusip>85254J102</cusip>
        <identifiers>
          <isin value="US85254J1025"/>
        </identifiers>
        <balance>1108474.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>29817950.60000000</valUSD>
        <pctVal>1.753975010705</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>AvalonBay Communities Inc</name>
        <lei>K9G90K85RBWD2LAGQX17</lei>
        <title>AvalonBay Communities Inc</title>
        <cusip>053484101</cusip>
        <identifiers>
          <isin value="US0534841012"/>
        </identifiers>
        <balance>216664.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>33801750.64000000</valUSD>
        <pctVal>1.988313239095</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="Monthly returns presented in Item B.5(a) have been calculated without deducting any applicable sales loads or redemption fees." noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2020-06-24</ncom:dateSigned>
      <ncom:nameOfApplicant>MFS SERIES TRUST XIII</ncom:nameOfApplicant>
      <ncom:signature>Kasey Phillips</ncom:signature>
      <ncom:signerName>Kasey Phillips</ncom:signerName>
      <ncom:title>Assistant Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
