| Frank Ellwood | |
| Birth Date: | 18 April 1935 |
| Birth Place: | Dover, Ohio, U.S. |
| Player Years1: | 1953–1956 |
| Player Team1: | Ohio State |
| Player Positions: | Quarterback, end |
| Coach Years1: | 1957 |
| Coach Team1: | Dover HS (OH) (assistant) |
| Coach Years2: | 1958 |
| Coach Team2: | Ohio State (assistant) |
| Coach Years3: | 1959–1961 |
| Coach Team3: | Air Force (assistant) |
| Coach Years4: | 1962–1964 |
| Coach Team4: | Ohio State (assistant) |
| Coach Years5: | 1965–1974 |
| Coach Team5: | Ohio (assistant) |
| Coach Years6: | 1975–1978 |
| Coach Team6: | Marshall |
| Coach Years7: | 1996 |
| Coach Team7: | Georgia Southern |
| Admin Years1: | 1990–1995 |
| Admin Team1: | Georgia Southern (sr. assoc. AD) |
| Admin Years2: | 1995 |
| Admin Team2: | Georgia Southern (interim AD) |
| Admin Years3: | 1996–1998 |
| Admin Team3: | Georgia Southern (sr. assoc. AD) |
| Overall Record: | 14–41 |
| Championships: | |
Frank Ellwood (born April 18, 1935)[1] 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 in 1996, compiling a record of 14–41 in five seasons.[2] 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.[3]