Northern Illinois-Iowa Conference

The Northern Illinois-Iowa Conference was an intercollegiate athletic conference affiliated with the NCAA Division III. Member institutions were located in the midwestern United States in the states of Illinois and Iowa. After the 2005–06 academic year, the NIIC merged with the Lake Michigan Conference to form a new league called the Northern Athletics Conference.

Members before dissolution

Institution	Location	Nickname	Founded	Type	Enrollment	Joined	Current Conference
Aurora University	Aurora, Illinois	Spartans	1893	Private/Non-sectarian	3,326	1970?	Northern (NAC)
Benedictine University	Lisle, Illinois	Eagles	1887	Private/Catholic	3,232	1969	Northern (NAC)
Clarke College	Dubuque, Iowa	Crusaders	1843	Private/Catholic	1,201	1988	Midwest Collegiate (MCC) (NAIA)
Concordia University Chicago	River Forest, Illinois	Cougars	1864	Private/Lutheran Missouri Synod	1,900	1969	Northern (NAC)
Eureka College	Eureka, Illinois	Red Devils	1855	Private/Christian Church	680	1996	SLIAC
Rockford College	Rockford, Illinois	Regents	1847	Private/Non-sectarian	1,395	1969	Northern (NAC)

Former members

Institution	Location	Nickname	Founded	Type	Enrollment	Joined	Left	Current Conference
Dominican University	River Forest, Illinois	Stars	1901	Private/Catholic	3,205	1990?	2005	Northern (NAC)
George Williams College	Williams Bay, Wisconsin	?????	1890	Private/Christian	N/A	1970?	1971?	Merged with Aurora University in Aurora, Illinois.
Judson College	Elgin, Illinois	Eagles	1963	Private/Christian	1,200	1973?	1996?	Chicagoland (CCAC) (NAIA)
Olivet Nazarene University	Bourbonnais, Illinois	Tigers	1908	Private/Nazarene, Wesleyan	4,495	1974?	1996?	Chicagoland (CCAC) (NAIA)
Trinity International University	Deerfield, Illinois	Trojans	1897	Private/Christian	850	1969	1996?	Chicagoland (CCAC) (NAIA)