William Jackson "Jack" Galbraith (September 15, 1906 – August 9, 1994) was a gymnast and Olympic medalist in the 1932 Summer Olympics. He was a member of the United States men's national artistic gymnastics team and competed at the 1932 Summer Olympics in Los Angeles where he won a silver medal in rope climbing. He served as a Rear Admiral in the United States Navy from 1929 through 1959 and was awarded a Silver Star, Bronze Star Medal, Purple Heart, and Presidential Unit Citation.