| Biographical details | |
|---|---|
| Born | April 1, 1968 Muskegon, Michigan, U.S. |
| Playing career | |
| 1986–1990 | Grand Valley State |
| Position(s) | Defensive lineman |
| Coaching career (HC unless noted) | |
| 1991 | Grand Valley State (GA) |
| 1992–1994 | Wayne State (DC) |
| 1996–1998 | Hillsdale (DC) |
| 1999–2002 | Grand Valley State (DC) |
| 2002–2004 | Central Michigan (DL) |
| 2005–2008 | Georgia (LB) |
| 2009 | Georgia (co-DC) |
| 2010–2011 | Cincinnati (Co-DC) |
| 2012 | Cincinnati (DC) |
| 2013–2015 | Tennessee (DC) |
| 2016 | South Florida (Safeties) |
| 2017 | Kentucky (consultant) |
| 2018–2019 | Colorado State (DC) |
| 2020–2021 | Georgia (DQC) |
| 2022 | LSU (Analyst) |
| 2023 | LSU (STC/OLB) |
| Accomplishments and honors | |
| Championships | |
| |
John Jancek (born April 1, 1968) is an American college football coach and former defensive lineman. He is married to his wife Kelly Jancek. Jancek has four sons Brady, Jack, Brock, and Zac.