OneWater Marine (ONEW) 10-Q 2025 Q1 Quarterly report

Exhibit 32.1

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 on Form 10-Q of OneWater Marine Inc. (the “Company”) for the quarter ended December 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Philip Austin Singleton, Jr., Chief Executive 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, 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.

Dated: January 31, 2025	By:	/s/ Philip Austin Singleton, Jr.
		Philip Austin Singleton, Jr.
		Chief Executive Officer
		(Principal Executive Officer)