Harold Jefferson Davall (May 5, 1879 – November 21, 1931) was an American college football player and coach, engineer, and railroad supervisor.

Born in Camden, New Jersey, Davall played football as an End at Cornell University before graduating with an engineering degree.

[1] Davall was married to Agnes C. McLaughlin, a public school teacher, at the Church of the Immaculate Conception in Camden, on June 17, 1907.

[2] During World War I, Davall served as a captain in the United States Army Corps of Engineers and was stationed at Camp A.

This biographical article relating to a college football coach first appointed in the 1900s is a stub.