William Graham Claytor, Jr. (March 14, 1912 – May 14, 1994) was an American lawyer, naval officer, and railroad, transportation and defense administrator for the United States government, working under the administrations of three US presidents. He is remembered for his actions as the captain of the destroyer escort USS Cecil J. Doyle (DE-368), during World War II which helped to save 316 lives during the USS Indianapolis tragedy.