The Summit Athletic Conference, or SAC, is a high school athletic conference consisting of ten high schools located in Fort Wayne, Indiana. Three of the schools are private; one being a Lutheran academy, and the other two being Catholic preparatories. The rest are public schools, being part of Fort Wayne Community Schools. Two limited members are part of Northwest Allen County Schools and Southwest Allen County Schools.

All member schools are located in Allen County, Indiana. Originally called the Fort Wayne City Series, the name was changed to the Summit Athletic Conference in 1973, when Harding High School joined.

Elmhurst High School closed at the end of the 2009–10 academic year, with students being spread out between North Side, South Side, and Wayne high schools. Harding closed at the end of the 2010–11 school year.

From 1971 to 1979, football competition was divided into North and South divisions.

¹ Won while SAC Member.