USS Tantalus (ARL-27) was one of 39 Achelous-class landing craft repair ships built for the United States Navy during World War II. Named for Tantalus (a legendary king of Lydia condemned to stand in a pool of water up to his chin and beneath fruit-laden boughs only to have the water or fruit recede at each attempt to drink or eat), she was the only U.S. Naval vessel to bear the name.