United States securities and exchange commission logo October 25, 2021 Brian McDade Chief Financial Officer SIMON PROPERTY GROUP INC /DE/ SIMON PROPERTY GROUP, L.P. 225 West Washington Street Indianapolis, Indiana 46204 Re: SIMON PROPERTY GROUP INC /DE/ SIMON PROPERTY GROUP, L.P. Form 10-K for the year ended December 31, 2020 Filed on February 25, 2021 File Nos. 001-14469 and 001-36110 Dear Mr. McDade: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Real Estate & Construction