Frank Ellwood is a former American football player, coach, and college athletic administrator. He served as the head football coach at Marshall University from 1975 to 1978 and at Georgia Southern University at in 1996, compiling a record of 14–41 in five seasons. He was previously an assistant coach at the Ohio State University and at Ohio University. He won a national championship as a player at Ohio State in 1954. Ellwood served as a senior associate athletic director at Georgia Southern from 1990 until his retirement in 1998. He was the school's interim athletic director from July 25 to December 31, 1995.
Ellwood has a grandson who played baseball at Kansas State University and who is currently playing in the Detroit Tigers minor league system named, Jason King.
Head coaching record