USS Peto (SS-265), a Gato-class submarine, was a ship of the United States Navy named for the peto, a sharp-nosed tropical fish of the mackerel family. Peto was laid down on 18 June 1941 by the Manitowoc Shipbuilding Company, Manitowoc, Wisconsin; launched on 30 April 1942; sponsored by Mrs. E. A. Lofquist; and commissioned on 21 November 1942, Lieutenant Commander William T. Nelson in command.