Northern Indiana Athletic Conference Former members Former members

| School | Location_ | Mascot | County | Joined | Previous_Conference | Left_ | Conference_joined |
|---|---|---|---|---|---|---|---|
| Fort Wayne North Side ** | Fort Wayne | Redskins | 02 Allen | 1942 | Ft. Wayne City Series | 1965 | Ft. Wayne City Series |
| Elkhart Memorial ** | Elkhart | Crimson Chargers | 20 Elkhart | 1972 | none (new school) | 2000 | Northern Lakes |
| South Bend LaSalle | South Bend | Lions | 71 St. Joseph | 1977 | Independents | 2001 | none (school closed) |