Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER 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 Annual Report of BlueRiver Acquisition Corp. (the “Company”) on Form 10-K for the period ending December 31, 2021, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, John Gregg, in my capacity as Co-Chief Executive Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)

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

(2)

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

Date: March 31, 2022

By:

/s/ John Gregg

Name:

John Gregg

Title:

Co-Chief Executive Officer

(Principal Executive Officer)