Ohio high school athletic conferences

While the Central Region includes a small number of conferences, many of these leagues contain many schools with multiple divisions.

The Southeast region includes the counties of Adams, Athens, Fayette, Gallia, Highland, Hocking, Jackson, Lawrence, Meigs, Perry, Pike, Ross, Scioto, and Vinton, as well as schools within Brown, Fairfield, Pickaway, and Washington counties.

This region includes the counties of Ashtabula, Columbiana, Cuyahoga, Geauga, Lake, Lorain, Mahoning, Medina, Portage, Stark, Summit, Trumbull, and Wayne, as well as schools within Ashland and Erie counties.

This region includes the counties of Allen, Auglaize, Crawford, Defiance, Fulton, Hancock, Hardin, Henry, Huron, Lucas, Mercer, Ottawa, Paulding, Putnam, Richland, Sandusky, Seneca, Van Wert, Williams, Wood, and Wyandot, as well as schools within Ashland, Erie, and Marion counties.

This region includes the counties of Butler, Champaign, Clark, Clermont, Clinton, Darke, Greene, Hamilton, Logan, Miami, Montgomery, Preble, Shelby, and Warren, as well as schools within Brown County.

The six OHSAA regions with the Central in red, the East in orange, Northeast in green, Northwest in purple, Southeast in yellow, and Southwest in blue. Counties that are in gray are split between two regions.