The Iron Hills Conference was an athletic conference of twenty high schools located in Essex County, Morris County and Union County in New Jersey, United States. The Iron division was often regarded as one of the most competitive in the state. The conference was split up at the end of the 2008-2009 sports season due to conference realignment changes made by the NJSIAA. The Essex County schools joined the Super Essex Conference, the Morris County schools joined the Northwest Jersey Athletic Conference, and the Union County schools joined the Union County Interscholastic Athletic Conference.