Ryan Patrick Day is an American football coach and former college football player. He is the 24th and current head football coach at Ohio State University, a position he has held since 2019. Day was also the acting head coach for the Ohio State Buckeyes for the first three games of the 2018 season. He attended the University of New Hampshire, where he played quarterback and linebacker for the Wildcats from 1998 to 2001 before he began his coaching career in 2002.