| Current position | |
|---|---|
| Title | Defensive coordinator |
| Team | UNLV |
| Conference | MW |
| Biographical details | |
| Born | September 10, 1986 Albuquerque, New Mexico, U.S. |
| Playing career | |
| 2005–2008 | New Mexico |
| Position(s) | Linebacker |
| Coaching career (HC unless noted) | |
| 2011–2013 | San Diego State (GA) |
| 2014–2017 | San Diego State (LB) |
| 2018–2019 | San Diego State (DC/LB) |
| 2020 | Mississippi State (DC/LB) |
| 2021–2022 | Mississippi State (DC/S) |
| 2022–2023 | Mississippi State |
| 2024 | Ole Miss (analyst) |
| 2025–present | UNLV (DC/LB) |
| Head coaching record | |
| Overall | 5–6 |
| Bowls | 1–0 |
Zachary Arnett (born September 10, 1986) is an American football coach who is currently the defensive coordinator at UNLV. He previously served as the head coach at Mississippi State University in 2023 and as the defensive coordinator and at Mississippi State from 2020 to 2022.
Arnett played college football at the University of New Mexico as a linebacker from 2005 to 2008. Prior to his tenure at Mississippi State, he held various assistant coaching positions at San Diego State University from 2011 to 2019.