Black Diamond Conference
| Conference | IHSA |
|---|---|
| Founded | 1949 |
| Sports fielded |
|
| No. of teams | 13 |
| Region | Southern Illinois |
| Official website | Black Diamond Conference |
| Locations | |
The Black Diamond Athletic Conference (BDC) is a high school athletic conference represented by 13 schools in the southern portion of Illinois. The conference currently offers championships for girls in basketball, cross country, golf, softball, track and field, and volleyball. In boys' sports, the BDC offers championships in baseball, basketball, cross country, football, golf, track and field, and wrestling.