UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of July 2026

Commission File Number: 001-42469

Uni-Fuels Holdings Limited

(Registrant’s Name)

9 Temasek Boulevard, Suntec Tower 2 #19-03

Singapore 038989

(Address of Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

On July 2, 2026, Uni-Fuels Holdings Limited (the “Company”) announced that it would change its business address and mailing address of its principal executive office to 9 Temasek Boulevard, Suntec Tower 2 #19-03, Singapore 038989, effective July 2, 2026.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.