John Harmon

• John Harmon (actor), American actor
• John Harmon (attorney), United States Assistant Attorney General under President Jimmy Carter
• John Harmon (coach), Boston University basketball and football coach
• John Harmon (character), a character in Our Mutual Friend
• John Harmon (Wisconsin politician), American lumberman and politician.
• John H. Harmon, mayor of Detroit and publisher of the Detroit Free Press
• John T. W. Harmon, Liberian-American bishop of the Episcopal Diocese of Arkansas