USS Cymophane (PYc-26) was an Cymophane-class patrol yacht acquired by the United States Navy early during World War II. She was used for patrol, escort, anti-submarine, and rescue operations along coastal waters. Cymophane was built in 1926 as Sea Forth by Newport News Shipbuilding and Dry Dock Co., Newport News, Virginia; acquired by the Navy on 2 March 1942; and commissioned on 6 August 1942, Lieutenant R. M. Hull, USNR, in command.