- Cable Association of South Africa (CASA)
- Campus Protection Society of Southern Africa (CAMPROSA)
- Cancer Association of South Africa (CANSA)
- Canning Fruit Producers Association (CFPA)
- Canoeing South Africa (CSA)
- Canvas Employers Organization (CEO)
- Cape Agri Employers’ Organisation (CAEO)
- Cape Bar Society of Advocates (CBSA)
- Cape Boerperd Breeders Society (CBBS)
- Cape Chamber of Commerce and Industry (CCI)
- Cape Clothing & Textile Cluster (CCTC)
- Cape Craft and Design Institute (CCDI)
- 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 (CPASA)
- Cape Teachers’ Profession Association (CTPA)
- Cape Town and District Laundry, Cleaners and Dyers’ Association (CTDLCDA)
- Cape Town Baseball Federation (CTBF)
- Cape Town Basketball Association (CTBA)
- Cape Town Family History Society (CTFHS)
- Cape Town Fashion Council (CTFC)
- Cape Town Gem and Mineral Club (CTGMC)
- Cape Town Judo Association (CTJA)
- Cape Town Society for The Blind (CTSB)