John Herbert Gleason (February 26, 1916 – June 24, 1987) was an American actor, comedian, writer, composer, and conductor known affectionately as "The Great One.
- Known For: Acting
- Birthday: 1916-02-26
- Place of Birth: Brooklyn, New York City, New York, USA
- Also Known As: Herbert Walton Gleason Jr., John Herbert Gleason, Jackie C. Gleason