USS Mahopac (ATA-196) was a U.S. Navy Sotoyomo class auxiliary fleet tug laid down on 24 November 1944 and launched 21 December 1944.

She served briefly in the Pacific Theater at the end of World War II, followed by extended assignments in Alaska and Japan.

She then proceeded to the north Pacific for towing and search air rescue duties with the Alaskan Sea frontier.

En route she received new orders canceling inactivation and changing her homeport to Yokosuka, Japan, effective 1 July 1957.

Through 1964, her duties took her as far as Subic Bay in the Philippines; her 1965 to 1969 assignments extended her cruises to include periodic tours off the coast of Vietnam in support of 7th Fleet operations there.