Rear Admiral Morton Claire Mumma, Jr. (1904–1968) was a senior officer in the United States Navy. He was awarded the Navy Cross on 13 December 1941 during World War II, while commanding USS Sailfish (SS-192). He later served as naval aide to Secretary James Forrestal in 1944–45, and retired in 1946. Mumma was president of the National Rifle Association from 1955 to 1957, and at his death was on the association's executive council.