Groupon (GRPN) 10-Q 2015 Q3 Quarterly report

Exhibit 32.1

Certifications Pursuant to

18 U.S.C. Section 1350

As Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of Groupon, Inc. (the "Company") on Form 10-Q for the period ending September 30, 2015, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Rich Williams, Chief Executive Officer of the Company, and Brian A. Kayman, Interim Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to our knowledge, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

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

By:    /s/ Rich Williams

Rich Williams

Chief Executive Officer

By:    /s/ Brian A. Kayman

Brian A. Kayman

Interim Chief Financial Officer

Date:    November 3, 2015