S
- Soil Science Society of SA (SSSSA)
- Solidariteit Helpende Hand (SHH)
- Solidarity Union SA (SUSA)
- Somerset West Bird Club (SWBC)
- Somerset West Pistol Club (SWPC)
- Sorghum Trust (ST)
- South Africa – Israel Chamber of Commerce (SAICC)
- South Africa Guernsey Cattle Breeders Society (SAGCBS)
- South African Garage Door Association (SAGDA)
- South African Institute of Taxation (SAIT)
- South African Abalone Export Council (SAAEC)
- South African Academy of Aesthetic Dentistry (SAAAD)
- South African Academy of Engineering (SAAE)
- South African Academy of Family Physicians (SAAFP)
- South African Advertising Research Foundation (SAARF)
- South African Aerospace Maritime and Defence Export Council (SAAMDEC)
- South African Affordable Residential Developers Association (SAARDA)
- South African Agricultural and Machinery Association (SAAMA)
- South African Agricultural Processors Association (SAAPA)
- South African Air Force Association (SAAFA)
- South African Air Rifle Association (SAARA)
- South African Animal Health Association (SAAHA)
- South African Antique Dealers Association (SAADA)
- South African Apparel Association (SAAA)
- South African Archaeological Society (SAAS)
- South African Arms and Ammunition Dealers Association (SAADA)
- South African Artificial Lure Angling Association (SALAA)
- South African Association for Child and Adolescent Psychiatry and Allied Professionals (SA-ACAPAP)
- South African Association for Child and Adolescent Psychiatry and Allied Professionals (SAACAPAP)
- South African Association for Clinical Biochemistry and Laboratory Medicine (SAACB)