Gerald D. "Red" Armstrong (1903 – May 7, 1978) was an American football and basketball player and coach.
[1] He served as the head football coach at Denison University in Granville, Ohio from 1942 to 1944, compiling a record of 12–3–2.
[2] Armstrong was also the head basketball coach at Denison during the 1943–44 season, tallying a mark of 18–2.
[3] In 1944, he resigned from coaching to enter into private business in Newark, Ohio.
[4] He died at Licking Memorial Hospital, in Newark, on May 7, 1978.