Three ships of the United States Navy have been named Admiral.

, was the name of a Navy steamer before it was changed to USS Fort Morgan. A wooden-hulled motorboat built in 1913. She served with the Navy and Coast Guard until she was destroyed by a fire in 1920. A wooden hulled steam yacht, originally named Red Cross. She was taken over for the US Navy on 5 July 1917 and renamed USS Admiral (SP-967).