The Northern Indiana Conference (NIC) is a high school athletic conference that was founded in 1927 and spanned from as far west as Hammond and Gary to South Bend/Mishawaka and Elkhart to the east and south to Plymouth.

Since its start in 1927, a total of 32 separate schools have at one time called the NIC home.

The West Division (as well as Valparaiso) left to form the Northwestern Conference in 1963.

Like the Southern Indiana Athletic Conference, the NIAC was also a superconference that spanned several counties, and a lot of driving miles, for a period between 1940 and 1965.

[2] Baseball, Basketball, Cross Country, Football, Golf, Soccer, Swimming & Diving, Tennis, Track & Field, Wrestling Basketball, Cross Country, Golf, Gymnastics, Soccer, Softball, Swimming & Diving, Tennis, Track & Field, Volleyball Main rivalries: Notable sub-rivalries Former rivalries (Asterisk indicates non-member of NIC) (Degree indicates a non-NIC sanctioned sport)