The 2023 Illinois Fighting Illini football team represented the University of Illinois in the West Division of the Big Ten Conference during the 2023 NCAA Division I FBS football season.

The Fighting Illini were led by Bret Bielema in his third season as the team's head coach.

They played their home games at Memorial Stadium in Champaign, Illinois.

The Illinois Fighting Illini football team drew an average home attendance of 49,698 in 2023.

[1] The Illini were predicted to finish fourth in the Big Ten's West Division.