This is a list of high school athletic conferences in the East and Southeast Regions of Ohio, as defined by the OHSAA.
[1] Because the names of localities and their corresponding high schools do not always match and because there is often a possibility of ambiguity with respect to either the name of a locality or the name of a high school, the following table gives both in every case, with the locality name first, in plain type, and the high school name second in boldface type.
All schools are also affiliated with the Ohio Valley Athletic Conference.
Future Members Former Members This league formed in October 2016 in preparation for August 2017 from the remnants of the South Central Ohio League.
The league has an odd distinction in that all of its current members were league members by its second year, giving the SHAC a level of continuity that most rural-based leagues do not have.