The SS Fort St. John was a cargo ship built in 1943, primarily used during World War II. It was part of the Fort-class cargo ships, designed to transport supplies and equipment to support military operations. The vessel was named after the city of Fort St. John in British Columbia, Canada. After the war, the SS Fort St. John continued to operate in commercial shipping until it was eventually retired. The ship is notable for its role in enhancing logistics during wartime and contributing to post-war trade, reflecting the importance of maritime transport in global commerce.