The Mountain Athletic Conference (MAC or simply Mountain Conference) is a high school athletic conference with the Pennsylvania Interscholastic Athletic Association (PIAA) located in the state of Pennsylvania. The conference is located primarily in the central region of the state. Most of the conferences 9 member schools are located in District 6 of the PIAA, except for Clearfield Area Junior/Senior High School which is a member of District 9, but competes in District 6 athletic competitions. The MAC consists of the Pennsylvania counties of Bedford, Blair, Centre, Clearfield and Huntingdon.