The Illinois Intercollegiate Football League was a short-lived intercollegiate athletic football conference that existed from 1891 to 1895. As its name suggests, the league's members were located in the state of Illinois. It is unknown which teams won the IIFL football championship during its five seasons in existence.^[1]

This list is incomplete; you can help by adding missing items. (January 2018)

• 1890 - Illinois (6–0)^[2]

• List of defunct college football conferences