The 2015 Northwestern Wildcats football team represented Northwestern University during the 2015 NCAA Division I FBS football season. It was Pat Fitzgerald's tenth season as the team's head coach. The Wildcats home games were played at Ryan Field in Evanston, Illinois. They were members of the West Division of the Big Ten Conference. They finished the season 10–3, 6–2 in Big Ten play to finish in a tie for second place in the West Division. They were invited to the Outback Bowl where they were defeated by Tennessee 45–6.