USS Rescuer (ARS-18) was a Rescuer-class rescue and salvage ship commissioned by the U.S. Navy during World War II. Her task was to come to the aid of stricken vessels. Rescuer (ARS-18) was built in 1904 as tug Casper by United Engine Works, and acquired for the Navy 6 February 1942 by the Port Director, San Pedro, California.