This is a list of high school athletic conferences in the Southwest Region of Ohio, as defined by the OHSAA. 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. The school's team nickname is given last.
Kenton Trail Division
Mad River Division
Future members
Former members
Conference Website: http://www.chlsports.com/
Former members
Website: http://www.cmacstats.com/
Former members
The conference was originally the Darke County League, begun in either the 1920s or early 1930's, and renamed itself after most of the Wayne Trace League merged with the DCL in 1978. Website: http://www.crosscountyconference.com/
Former members
Dayton high schools were part of the Southwest Ohio Public League from 2002 to 2007, and will play football in the same conference beginning in 2015.
Former members (all closed)
The Eastern Cincinnati Conference comprises teams mostly from larger schools in eastern Hamilton County and nearby counties in Greater Cincinnati. http://eccsports.com/
Former Member
Beginning with the 2013-14 Academic year, The GCL experienced a restructuring over the summer. The Co-ed schools merged into one division, and the Girls Greater Catholic League was merged into the GCL.
Conference Website: GCL Co-ed, GCL South
North (Co-Ed)
Central (Co-Ed)
South (Boys)
South (Girls)
Former members
Conference Website: http://www.gmcsports.com/
Former schools
The GWOC was formed in 2001 as a merger of the Western Ohio League and Greater Miami Valley Conference.