USS Cebu (ARG-6) was a Luzon-class internal combustion engine repair ship that saw service in the United States Navy during World War II.

Cebu was laid down 21 September 1943, as liberty ship SS Francis P. Duffy, under a Maritime Commission (MARCOM) contract, MCE hull 1805, by the Bethlehem-Fairfield Shipyard, Inc., in Baltimore, Maryland; launched 18 October 1943; sponsored by Mrs. M. C. Bird; acquired by the Navy 27 October 1943; and commissioned 15 April 1944.

Her services to small craft at Leyte continued until 21 September, when she sailed for occupation duties at Okinawa and Japan until 11 March 1946.

[3] Cebu prepared at Pearl Harbor from 29 March to 11 May 1945, for her role supporting the atomic tests of Operation Crossroads at Bikini and Kwajalein in the summer of 1946.

[3] On 4 August 1961, Cebu was transferred to the National Defense Reserve Fleet at Suisun Bay, California.