Starwood Hotel & Resorts Worldwide 10-Q 2013 Q3 Quarterly report

Exhibit 32.1

Certification Pursuant to Section 1350 of Chapter 63

of Title 18 of the United States Code

I, Frits van Paasschen, the Chief Executive Officer of Starwood Hotels & Resorts Worldwide, Inc. (“Starwood”), certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that (i) the accompanying Form 10-Q of Starwood for the quarter ended September 30, 2013 (the “Form 10-Q”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Starwood.

/s/ Frits van Paasschen

Frits van Paasschen

Chief Executive Officer

Starwood Hotels & Resorts Worldwide, Inc.

October 25, 2013