John S. Gleason Jr. (February 11, 1915 – May 2, 1993) was an American banker convicted of fraud in 1977. Prior to that, he served as the sixth Administrator of Veterans Affairs from 1961 to 1965. He also served as the 40th National Commander of the American Legion from 1957 to 1958. Gleason was a highly decorated World War II veteran and Cold War era National Guard general, having received the Silver Star, the Legion of Merit, and the Bronze Star with two oak leaf clusters.