USAHS Blanche F. Sigman was a United States Army hospital ship during World War II. The ship was completed in April 1943 as Liberty ship SS Stanford White. When selected for conversion to a hospital ship, she was originally assigned the name USAHS Poppy, but never operated under that name. After being decommissioned as a hospital ship, she became U.S. Army transport USAT Blanche F. Sigman.