The Southwest Preparatory Conference (SPC) is an athletic conference for large, elite private high schools in Texas and Oklahoma. It is composed of the following schools:
- The Awty International School in Houston, Texas
- Casady School in Oklahoma City, Oklahoma
- Cistercian Preparatory School in Irving, Texas
- Duchesne Academy of the Sacred Heart in Houston, Texas
- Episcopal High School in Bellaire, Texas
- Episcopal School of Dallas in Dallas, Texas
- Fort Worth Country Day School in Fort Worth, Texas
- Greenhill School in Addison, Texas
- Hockaday School in Dallas, Texas
- Houston Christian High School in Houston, Texas
- The John Cooper School in The Woodlands, Texas
- Kinkaid School in Houston, Texas
- The Oakridge School in Arlington, Texas
- St. Andrew's Episcopal School in Austin, Texas
- St. John's School in Houston, Texas
- St. Mark's School of Texas in Dallas, Texas
- St. Stephen's Episcopal School in Austin, Texas
- Trinity Valley School in Fort Worth, Texas