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Exhibit 21.1

List of Subsidiaries of Simon Property Group, Inc.

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Subsidiary

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Jurisdiction

 

Simon Property Group, L.P.

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Indiana

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The Retail Property Trust

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Massachusetts

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Simon Property Group (Illinois), L.P.

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Illinois

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Simon Property Group (Texas), L.P.

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Texas

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M.S. Management Associates, Inc.

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Delaware

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Simon Property Group Administrative Services Partnership, L.P.

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Delaware

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Kravco Simon Investments, L.P.

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Pennsylvania

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Premium Outlet Partners, L.P.

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Delaware

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SPG Mayflower, LLC

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Delaware

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The Simon Realty Group, LLC

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Delaware

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Simon Services, Inc.

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Delaware

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Simon Global Development B.V.

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Netherlands

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Simon MAC S.a.r.l.

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Luxembourg

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Simon International S.a.r.l.

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Luxembourg

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List of Subsidiaries of Simon Property Group, L.P.

​

​

​

​

Subsidiary

  ​ ​ ​

Jurisdiction

 

The Retail Property Trust

​

Massachusetts

​

Simon Property Group (Illinois), L.P.

​

Illinois

​

Simon Property Group (Texas), L.P.

​

Texas

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M.S. Management Associates, Inc.

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Delaware

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Simon Property Group Administrative Services Partnership, L.P.

​

Delaware

​

Kravco Simon Investments, L.P.

​

Pennsylvania

​

Premium Outlet Partners, L.P.

​

Delaware

​

SPG Mayflower, LLC

​

Delaware

​

The Simon Realty Group, LLC

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Delaware

​

Simon Services, Inc.

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Delaware

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Simon Global Development B.V.

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Netherlands

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Simon MAC S.a.r.l.

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Luxembourg

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Simon International S.a.r.l.

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Luxembourg

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Omits names of subsidiaries that as of December 31, 2025 were not, in the aggregate, “significant subsidiaries.”

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