The 2015 Ohio State Buckeyes football team represented Ohio State University in the 2015 NCAA Division I FBS football season. It was the Buckeyes' 126th season overall, the 103rd as a member of the Big Ten Conference, and second as a member of the Eastern Division. The team was led by Urban Meyer, in his fourth year as head coach, and played its home games at Ohio Stadium in Columbus, Ohio. They finished the season 12–1, 7–1 in Big Ten play, to finish in a tie for the East Division championship with Michigan State. Due to their head-to-head loss to Michigan State, they did not represent the East Division in the Big Ten Championship Game. They were invited to the Fiesta Bowl where they defeated Notre Dame.

The Hawaii Rainbow Warriors football team represents the University of Hawaiʻi at Mānoa in NCAA Division I FBS college football. It was part of the Western Athletic Conference until July 2012, when the team joined the Mountain West Conference.