Exhibit 32.3

CERTIFICATION PURSUANT TO

18 U.S.C.§1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of the Frontier Select Fund, a Series of Frontier Funds on Form 10-Q for the period ended June 30, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies, to the best of his knowledge:

(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 Frontier Select Fund.

/s/ Patrick J. Kane
Patrick J. Kane
Chairman and Chief Financial Officer of Frontier Fund
Management LLC, the Managing Owner of Frontier Funds

August 14, 2025

/s/ Patrick F. Hart III
Patrick F. Hart III
President and Chief Executive Officer of Frontier Fund
Management LLC, the Managing Owner of Frontier Funds

August 14, 2025

Frontier Funds 10-Q