ZELTIQ Aesthetics (ZLTQ) 10-Q 2015 Q1 Quarterly report

Exhibit 32.1

CERTIFICATION 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 ZELTIQ Aesthetics, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), each of the undersigned officers of the Company do hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

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

• The information in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

May 5, 2015

/s/ Mark J. Foley

Mark J. Foley

President and Chief Executive Officer

(Principal Executive Officer)

/s/ Patrick F. Williams

Patrick F. Williams

Senior Vice President and Chief Financial Officer

(Principal Financial and Accounting Officer)