| Current position | |
|---|---|
| Team | Brigham Young Cougars |
| Biographical details | |
| Born | January 31, 1982 Evanston, Wyoming, U.S. |
| Playing career | |
| 2003–2004 | Utah State |
| 2006–2007 | BYU |
| 2008 | Miami Dolphins |
| 2008 | St. Louis Rams |
| 2008 | Arizona Cardinals |
| Position(s) | Linebacker |
| Coaching career (HC unless noted) | |
| 2009 | BYU (intern) |
| 2010 | BYU (GA) |
| 2011–2012 | BYU (LB) |
| 2013–2015 | BYU (ST/LB) |
| 2016–2017 | Virginia (ST/OLB) |
| 2018–2020 | Virginia (co-DC/OLB) |
| 2021 | Virginia (co-DC/LB) |
| 2022 | Boise State (co-ST/Edge) |
| 2023–present | BYU (ST/DE) |
Kelly Scott Poppinga (born January 31, 1982) is an American football coach and former player. He is the special teams coordinator and defensive ends coach at Brigham Young University (BYU). He is the younger brother of National Football League (NFL) linebacker Brady Poppinga.