| Current position | |
|---|---|
| Title | Defensive coordinator |
| Team | Ingolstadt Dukes |
| Biographical details | |
| Born | October 5, 1957 Hastings, Nebraska, U.S. |
| Coaching career (HC unless noted) | |
| 1980–1981 | Osceola HS (NE) |
| 1982–1985 | Fort Calhoun HS (NE) |
| 1986–1988 | Greeley Central HS (CO) |
| 1989–1990 | Northern Colorado (DL) |
| 1991–2022 | Ripon |
| 2023–present | Ingolstadt Dukes (DC) |
| Head coaching record | |
| Overall | 193–114 (college) |
| Accomplishments and honors | |
| Championships | |
| 3 MWC (1996, 2001, 2022) 3 MWC North Division (1995–1997) | |
| Awards | |
| 2× MWC Coach of the Year (1996, 2022) 4× Wisconsin Football Coaches Association Wisconsin Private College Coach of the Year (2001, 2008, 2010, 2022) | |
Ron Ernst (born October 5, 1957) is an American football coach. He served as the head football coach at Ripon College in Ripon, Wisconsin from 1991 to 2022, compiling a record of 193–114. Ernst won his 100th game during the 2006 season and won more games than any other coach in program history. Ernst also served as Ripon's head men's golf coach, associate professor in the Department of Exercise Science and assistant athletic director.