USS Ostrich (AMc-51) was an Accentor-class coastal minesweeper acquired by the U.S. Navy for the dangerous task of removing mines from minefields laid in the water to prevent ships from passing. The second ship to be named Ostrich by the Navy was laid down 6 February 1941, by the Herreschoff Mfr. Co. Bristol, Rhode Island; launched 29 March 1941 and placed in service 14 July 1941.