- Cable Association of South Africa (CASA)
- Campus Protection Society of Southern Africa (CAMPROSA)
- Cancer Association of South Africa (CANSA)
- Canning Fruit Producers Association (CFPA)
- Cape Bar Society of Advocates (CBSA)
- Cape Boerperd Breeders Society (CBBS)
- Cape Chamber of Commerce and Industry (CCI)
- Cape Clothing & Textile Cluster (CCTC)
- Cape Engineers and Founders Association ()
- Cape Engineers and Founders’ Association ()
- Cape Engineers and Founders’ Association (CEFA)
- Cape Furniture Manufacturers Association (CFMA)
- Cape Horticultural Society (CHS)
- Cape Hunters and Conservation Association (CHCA)
- Cape Institute for Architecture (CIfA)
- Cape Kidney Association (CKA)
- Cape Mental Health (CMH)
- Cape Piscatorial Society (CPS)
- Cape Pomological Association ()
- Cape Pomological Association (CPASA)
- Cape Teachers` Profession Association (CTPA)
- Cape Teachers’ Profession Association (CTPA)
- Cape Town Family History Society (CTFHS)
- Cape Town Society for The Blind (CTSB)
- Cape Women`s Agriculture Association (CWAA)
- Cape Women’s Agricultural Association (VLV)
- Capital City Business Chamber (CCBC)
- Caravan Club of Southern Africa (CCSA)
- Cartridge Collectors Association (CCA)
- Cat Association of Southern Africa (CASA)