Zachary Arnett (born September 10, 1986) is an American football coach who is the defensive coordinator at the University of Nevada, Las Vegas (UNLV), a position he has held since 2025.
Arnett attended La Cueva High School in Albuquerque, New Mexico and was a two-sport athlete in football and baseball.
He excelled on the field and in the classroom during his college career, earning six forced fumbles and was a first-team Academic All-American in 2008.
[3] After being away from football for two years, he became a graduate assistant at San Diego State under his New Mexico head coach Rocky Long.
[9][10] After Leach's death, Mississippi State removed the interim tag from Arnett's title and named him the 35th full-time head coach in school history on December 15, 2022.