USS Quirinus (ARL-39), originally LST-1151, was one of 39 Achelous-class landing craft repair ships built for the United States Navy during World War II.

LST-1151 was laid down 3 March 1945 by the Chicago Bridge and Iron Company of Seneca, Illinois.

Following initial commissioning, Quirinus steamed down the Mississippi River to New Orleans, then proceeded to Baltimore where she decommissioned for the completion of conversion to a landing craft repair vessel.

Commissioned in full 6 November 1945 she completed shakedown in Chesapeake Bay and, on 23 January 1946 got underway for the Caribbean.

On the 29th, she reported to TU 29.6.1 at Guantanamo Bay, and remained there until she returned, briefly, to Norfolk in May.