| John Mumford | |
| Birth Date: | 25 December 1956 |
| Birth Place: | Lawrence, Kansas, U.S. |
| Player Years1: | 1976–1978 |
| Player Team1: | Pittsburg State |
| Player Positions: | Tight end |
| Coach Years1: | 1980–1981 |
| Coach Team1: | Kansas (GA) |
| Coach Years2: | 1982 |
| Coach Team2: | South Dakota (DL) |
| Coach Years3: | 1983–1985 |
| Coach Team3: | South Dakota (ILB) |
| Coach Years4: | 1986–1989 |
| Coach Team4: | South Dakota (DC) |
| Coach Years5: | 1990–1999 |
| Coach Team5: | Southeast Missouri State |
| Coach Years6: | 2000–2003 |
| Coach Team6: | Army (DL) |
| Coach Years7: | 2003 |
| Coach Team7: | Army (interim HC) |
| Coach Years8: | 2004–2008 |
| Coach Team8: | Army (DC) |
| Coach Years9: | 2009–2014 |
| Coach Team9: | Army (DE) |
| Coach Years10: | 2014–2015 |
| Coach Team10: | Louisiana–Monroe (DL) |
| Coach Years11: | 2015 |
| Coach Team11: | Louisiana–Monroe (interim HC) |
| Coach Years12: | 2016 |
| Coach Team12: | Pope John Paul II Catholic HS (AL) |
| Coach Years13: | 2017–2022 |
| Coach Team13: | New Mexico State (DL) |
| Overall Record: | 41–79 (college) |
| Awards: | OVC Coach of the Year (1994) |
John David Mumford (born December 25, 1956) is an American football coach and former player. He was most recently the defensive line coach at New Mexico State University. Mumford served as the head football coach at Southeast Missouri State University from 1990 to 1999, as the interim head football coach at the United States Military Academy for seven games in 2003, and as the interim head football coach at the University of Louisiana at Monroe for three games in 2015.