The Indiana Collegiate Athletic Conference (ICAC) is a former intercollegiate athletic conference that sponsored American football and was affiliated with the NCAAs Division III. The ICAC was formed in June 1987, with 1990-1991 being the first full season of competition (all eight teams competing in eight varsity sports).
The addition of three Ohio schools (Bluffton College, College of Mount St. Joseph, and Wilmington College) and the departure of two Indiana schools (DePauw and Rose-Hulman) during the 1998-1999 season prompted a change in name to Heartland Collegiate Athletic Conference.