USS Colahan (DD-658) was a destroyer of the Fletcher class. She was launched on 3 May 1943 and commissioned on 23 August 1943.
On 11 December 1943 she reached Pearl Harbor and joined the Pacific Fleet. She was still in service when the war with Japan ended on 15 August 1945, and she survived that war. D. T. Wilber became her captain on 23 August 1944.
She entered Sagami Wan on 27 August 1945. Until 3 September she handled control of the entrance to Tokyo Bay. On 8 October she assisted the Japanese freighter Kiri Marti after that ship stranded at Miyake Shima, then carried the survivors on to Okubo. She departed Tokyo Bay on 31 October 1945 and headed for San Diego.
There she left commission for reserve status on 14 June 1946, and the 12th Naval District used her to train Naval Reserve sailors. The Navy restored her to commission on 16 December 1950. Working from San Diego, she trained until 20 August 1951.
That day she left San Francisco for a tour with the 7th Fleet, and she reached the Pacific coast again on 10 March 1952. Another sailing from San Diego began on 1 November 1952, and she was back on the west coast on 1 June 1953. From 1954 through 1957 she again went out to the Far East with the 7th Fleet.
From 1958 into 1963 her duty stayed along the west coast, where she trained reservists. In August 1961 the ship and those reservists were ordered back into the active fleet after the Berlin Wall crisis. Several months of drills followed, and a western Pacific deployment began on 2 February 1962. Princeton (LPH-5) had Colahan as escort on 15 April 1962 while heading for South Vietnam with helicopters and advisors for Soc Trang. Colahan came home from that cruise on 17 July 1962 and kept training reservists through the end of 1963.
The 1954 MGM film Men of the Fighting Lady shows her in the opening credits, steaming beside a carrier as the crews highline people from one ship to the other. On 1 August 1966 she was decommissioned and removed from the Naval Vessel Register. Off California she was expended as a target and sank on 18 December 1966.