USS Wolffish (SS-434) was a proposed United States Navy World War II Balao-class submarine. She has been the only U.S. Navy ship named for the wolffish (any of several large marine blennies, with strong teeth and great ferocity), although several U.S. Navy ships have been named for the seawolf, which is another name for the same fish. Wolffish's construction by the Cramp Shipbuilding Company of Philadelphia, Pennsylvania, was authorized but the contract for her construction was cancelled on 29 July 1944.