Caesars Entertainment (CZR) 10-Q 2021 Q3 Quarterly report

Exhibit 32.1

CERTIFICATION

of

Thomas R. Reeg

Chief Executive Officer

I, Thomas R. Reeg, Chief Executive Officer of Caesars Entertainment, Inc. (the “Company”), do hereby certify in accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.The Quarterly Report on Form 10-Q of the Company for the period ended September 30, 2021 (the “Periodic Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

2.The information contained in the Periodic Report fairly represents, in all material respects, the financial condition and results of operations of the Company.

Date: November 4, 2021

/s/ THOMAS R. REEG

Thomas R. Reeg

Chief Executive Officer