CASC-OR Affiliated Clubs
- BARC-OC - British Automobile Racing Club - Ontario Centre
- BEMC - British Empire Motor Club
- BMWCCT - BMW Club of Canada - Trillium Chapter
- CRCA - Canadian Race Communications Association
- CTA - Canadian Timing Association
- CVC - Canadian Volvo Club
- DAC - Deutscher Automobil Club
- LASC - London Auto Sport Club
- MCO - Motorsport Club of Ottawa
- MMS - Motorsport Marshalling Services
- MSOC - Mazda Sportscar Owners Club
- OMSC - Oshawa Motor Sport Club
- OSCC - Ottawa SportsCar Club
- OZC - Ontario Z Car Owners Association
- PMSC - Peterborough Motor Sports Club
- SCC - Saab Club of Canada
- SCMC - St. Catharines Motor Club
- SPDA - SPDA-Online.ca
- St. LAC - St. Lawrence Automobile Club
- TAC - Toronto Autosport Club
- TBAC - Thunder Bay Autosport Club
- TLMC - Twin Lakes Motor Club
- UMN - Underground Miata Network
- VARAC - Vintage Automobile Racing Association of Canada
- WOSCA - Western Ontario Sports Car Association