The Big North Conference (BNC) is a high school athletic conference in Michigan. The conference is affiliated with the Michigan High School Athletic Association (MHSAA).
The conference contains nine of the largest high schools across Northern Michigan and the Upper Peninsula. Among these schools, four are full-time members, two are non-football members, and three are football-only members.
The conference was created in 1997 after the split of Traverse City Senior High School into Central and West high schools. It combined the eight largest schools in Northern Michigan. In 2004, due to decreasing enrollment, Cheboygan and Sault Area left the conference. West Branch Ogemaw Heights joined the conference in 2011, but they left the conference after the 2015-16 school year due to decreasing enrollment as well.
In 2021, the league announced the departure of Traverse City Central and Traverse City West high schools' football programs, and those schools becoming associate members of the Saginaw Valley League. However, other sports offered by those schools will continue to participate in the Big North Conference.
In 2023, it was announced that three high schools, Escanaba, Marquette, and Sault Area, would be joining the BNC as football-only members.
Non-football members
Football-only members
From 1997 to 1999 the Big North had a A division and a B division.
Since 2000, the conference has operated with one division.