John Millard Harmon (May 20, 1895 – October 18, 1974) was an American football, basketball, and baseball coach and college athletics administrator.
He served as the head football coach at Central Wesleyan College in Warrenton, Missouri from 1921 to 1922, the University of Evansville in Evansville, Indiana from 1923 to 1929, and Boston University in 1933.
Harmon was also the head basketball coach at Central Wesleyan from 1921 to 1923, Evansville from 1923 to 1930, and Boston University from 1932 to 1935.
He died on October 18, 1974, at Cedarhouse Nursing Home in Ottawa.
This biographical article relating to a college football coach first appointed in the 1930s is a stub.