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          <ccc>XXXXXXXX</ccc>
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      <regFileNumber>811-03327</regFileNumber>
      <regCik>0000356349</regCik>
      <regLei>5493000SCRZM3WD72S74</regLei>
      <regStreet1>111 HUNTINGTON AVENUE</regStreet1>
      <regCity>BOSTON</regCity>
      <regStateConditional regCountry="US" regState="US-MA"/>
      <regZipOrPostalCode>02199</regZipOrPostalCode>
      <regPhone>617-954-5000</regPhone>
      <seriesName>MFS Global Real Estate Fund</seriesName>
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      <repPdEnd>2025-08-31</repPdEnd>
      <repPdDate>2024-11-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
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      <totLiabs>1337400.15</totLiabs>
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        <name>Universal Health Services Inc</name>
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        <name>Ventas Inc</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Federal Realty Investment Trust</name>
        <lei>549300FHEI1SLVZ0RB48</lei>
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        <cusip>313745101</cusip>
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          <isin value="US3137451015"/>
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        <payoffProfile>Long</payoffProfile>
        <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>
      <invstOrSec>
        <name>Alexandria Real Estate Equities Inc</name>
        <lei>MGCJBT4MKTQBVLNUIS88</lei>
        <title>Alexandria Real Estate Equities Inc</title>
        <cusip>015271109</cusip>
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          <isin value="US0152711091"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>CapitaLand Investment Ltd/Singapore</name>
        <lei>254900AT4UQDU7SNXX49</lei>
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          <isin value="SGXE62145532"/>
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        <assetCat>EC</assetCat>
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        <invCountry>SG</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Shurgard Self Storage Ltd</name>
        <lei>549300J0UEIKU81XO336</lei>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
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        <invCountry>GG</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Ryman Hospitality Properties Inc</name>
        <lei>529900GCCWW9SRMPJR11</lei>
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          <isin value="US78377T1079"/>
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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>
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        <assetCat>EC</assetCat>
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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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      <invstOrSec>
        <name>Capitaland India Trust</name>
        <lei>N/A</lei>
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          <isin value="SG1V35936920"/>
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        <assetCat>EC</assetCat>
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        <invCountry>SG</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Lamar Advertising Co</name>
        <lei>529900Y8WW4MKVPTB543</lei>
        <title>Lamar Advertising Co</title>
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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>Parkway Life Real Estate Investment Trust</name>
        <lei>549300I4DKVD2OF5LW91</lei>
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          <isin value="SG1V52937132"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
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        <invCountry>SG</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Rural Funds Trust</name>
        <lei>261700WUPOIVLJPDE825</lei>
        <title>Rural Funds Trust</title>
        <cusip>000000000</cusip>
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          <isin value="AU000000RFF5"/>
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        <assetCat>EC</assetCat>
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        <invCountry>AU</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Cellnex Telecom SA</name>
        <lei>5493008T4YG3AQUI7P67</lei>
        <title>Cellnex Telecom SA</title>
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        <assetCat>EC</assetCat>
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        <invCountry>ES</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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        <name>Douglas Emmett Inc</name>
        <lei>N/A</lei>
        <title>Douglas Emmett Inc</title>
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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>Grainger PLC</name>
        <lei>2138007CEIRKZMNI2979</lei>
        <title>Grainger PLC</title>
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        <assetCat>EC</assetCat>
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        <invCountry>GB</invCountry>
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        <fairValLevel>1</fairValLevel>
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        <name>Kimco Realty Corp</name>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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        <name>Charter Hall Group</name>
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        <invCountry>AU</invCountry>
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        <fairValLevel>1</fairValLevel>
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        <name>Japan Metropolitan Fund Invest</name>
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        <title>Japan Metropolitan Fund Invest</title>
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        <invCountry>JP</invCountry>
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        <fairValLevel>1</fairValLevel>
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        <name>Essex Property Trust Inc</name>
        <lei>549300TR2H2VEFX0NC60</lei>
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        <fairValLevel>1</fairValLevel>
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        <name>Helios Towers PLC</name>
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        <invCountry>GB</invCountry>
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        <fairValLevel>1</fairValLevel>
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        <name>SBA Communications Corp</name>
        <lei>5299001HX8ZN8Y8QIT49</lei>
        <title>SBA Communications Corp</title>
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        <fairValLevel>1</fairValLevel>
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        <name>MFS Institutional Money Market Portfolio</name>
        <lei>5L2W638H85N8T1136O07</lei>
        <title>MFS Institutional Money Market Portfolio</title>
        <cusip>55291X109</cusip>
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        <assetCat>STIV</assetCat>
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        <fairValLevel>1</fairValLevel>
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        <name>NNN REIT Inc</name>
        <lei>5493008JKH5SOTI0JS97</lei>
        <title>NNN REIT Inc</title>
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        <name>Canadian Apartment Properties REIT</name>
        <lei>549300B1MYVTQEB2DI90</lei>
        <title>Canadian Apartment Properties REIT</title>
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        <invCountry>CA</invCountry>
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        <fairValLevel>1</fairValLevel>
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        <name>National Storage REIT</name>
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        <title>National Storage REIT</title>
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        <invCountry>AU</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>Vonovia SE</name>
        <lei>5299005A2ZEP6AP7KM81</lei>
        <title>Vonovia SE</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="DE000A1ML7J1"/>
        </identifiers>
        <balance>1592992.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="EUR" exchangeRt="0.94629800"/>
        <valUSD>52858559.14000000</valUSD>
        <pctVal>2.150421215696</pctVal>
        <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>
        </securityLending>
      </invstOrSec>
      <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"/>
        </identifiers>
        <balance>634664.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>104186442.24000000</valUSD>
        <pctVal>4.238570619896</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>Digital Realty Trust Inc</name>
        <lei>549300HKCZ31D08NEI41</lei>
        <title>Digital Realty Trust Inc</title>
        <cusip>253868103</cusip>
        <identifiers>
          <isin value="US2538681030"/>
        </identifiers>
        <balance>537362.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>105156369.78000000</valUSD>
        <pctVal>4.278029749953</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>Segro PLC</name>
        <lei>213800XC35KGM9NFC641</lei>
        <title>Segro PLC</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="GB00B5ZN1N88"/>
        </identifiers>
        <balance>3758110.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="GBP" exchangeRt="0.78588500"/>
        <valUSD>37299678.71000000</valUSD>
        <pctVal>1.517446213851</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>Encompass Health Corp</name>
        <lei>549300FVRPM9DRQZRG64</lei>
        <title>Encompass Health Corp</title>
        <cusip>29261A100</cusip>
        <identifiers>
          <isin value="US29261A1007"/>
        </identifiers>
        <balance>263773.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>27152792.62000000</valUSD>
        <pctVal>1.104644966973</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>Weyerhaeuser Co</name>
        <lei>08IRJODWFYBI7QWRGS31</lei>
        <title>Weyerhaeuser Co</title>
        <cusip>962166104</cusip>
        <identifiers>
          <isin value="US9621661043"/>
        </identifiers>
        <balance>1559464.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>50308308.64000000</valUSD>
        <pctVal>2.046670510612</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>Extra Space Storage Inc</name>
        <lei>N/A</lei>
        <title>Extra Space Storage Inc</title>
        <cusip>30225T102</cusip>
        <identifiers>
          <isin value="US30225T1025"/>
        </identifiers>
        <balance>467827.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>79979703.92000000</valUSD>
        <pctVal>3.253778667693</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>Rexford Industrial Realty Inc</name>
        <lei>549300MSLO0DF0EMX355</lei>
        <title>Rexford Industrial Realty Inc</title>
        <cusip>76169C100</cusip>
        <identifiers>
          <isin value="US76169C1009"/>
        </identifiers>
        <balance>1330228.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>55975994.24000000</valUSD>
        <pctVal>2.277246439211</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>Equinix Inc</name>
        <lei>549300EVUN2BTLJ3GT74</lei>
        <title>Equinix Inc</title>
        <cusip>29444U700</cusip>
        <identifiers>
          <isin value="US29444U7000"/>
        </identifiers>
        <balance>140092.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>137497496.16000000</valUSD>
        <pctVal>5.593749388146</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>Cousins Properties Inc</name>
        <lei>5493007XPYD5EJABN062</lei>
        <title>Cousins Properties Inc</title>
        <cusip>222795502</cusip>
        <identifiers>
          <isin value="US2227955026"/>
        </identifiers>
        <balance>547128.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>17365842.72000000</valUSD>
        <pctVal>0.706486843779</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>Equity LifeStyle Properties Inc</name>
        <lei>529900PEQG66LENB6798</lei>
        <title>Equity LifeStyle Properties Inc</title>
        <cusip>29472R108</cusip>
        <identifiers>
          <isin value="US29472R1086"/>
        </identifiers>
        <balance>1232188.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>87891970.04000000</valUSD>
        <pctVal>3.575669865741</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>DigitalBridge Group Inc</name>
        <lei>549300XG87L902AGBO89</lei>
        <title>DigitalBridge Group Inc</title>
        <cusip>25401T603</cusip>
        <identifiers>
          <isin value="US25401T6038"/>
        </identifiers>
        <balance>451736.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>5917741.60000000</valUSD>
        <pctVal>0.240748845460</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>2024-12-27</ncom:dateSigned>
      <ncom:nameOfApplicant>MFS SERIES TRUST XIII</ncom:nameOfApplicant>
      <ncom:signature>James Byrne</ncom:signature>
      <ncom:signerName>James Byrne</ncom:signerName>
      <ncom:title>Assistant Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
