Mike O'Guin serves as Assistant Defensive Line for Oklahoma State University's Football program in Stillwater, Oklahoma. Mike O’Guin was named Oklahoma State's assistant defensive line coach in December 2025. He is a 15-year coaching veteran who has worked with defensive linemen throughout his career.
He came to OSU from Texas State, where he worked as the defensive line coach for the 2023-25 seasons. During his time at Texas State, he helped guide the Bobcats to three bowl games. In his first season there in 2023, O'Guin coached a defensive line that helped the Bobcats lead the nation in tackles for loss and rank among the top 10 in sacks. The unit nearly broke the overall program record for tackles for loss in a season with 110.0 and set the program's FBS record for most sacks in a season with 40.0.
