John Harmon

John Harmon may refer to:
 * John Harmon (actor) (1905–1985), American actor
 * John Harmon (attorney) (born 1944), 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) (1845–1921), American lumberman and politician.
 * John H. Harmon (1819–1888), mayor of Detroit and publisher of the Detroit Free Press
 * John T. W. Harmon Liberian-American bishop of the Episcopal Diocese of Arkansas