S
- SA Roadies Association (SARA)
- SA Roads Federation (SARF)
- SA Rugby Union (SARUA)
- SA Sailing Federation (SAS)
- SA Scout Association (SASA)
- SA Seniors Fitness Association (SASFA)
- SA Sheep Dog Association (SASDA)
- SA shower Enclosure Manufacturers Association (SASEMA)
- SA Society for Agricultural Extension (SASAE)
- SA Society for Amateur Palaeontologists (SASAP)
- SA Society for Animal Science (SASAS)
- SA Society for Clinical Psychology (SASCP)
- SA Society for Co-operative Education (SASCE)
- SA Society for Enology and Viticulture (SASEV)
- SA Society for Haematology (SASH)
- SA Society for Periodontology, implantology and Oral Medicine (SASPIO)
- SA Society of Anaesthesiologists (SASA)
- SA Society of Artists (SASA)
- SA Society of Bank Officials – The Finance Union (SASBO)
- SA Society of Biochemistry & Molecular Biology (Cape) ()
- SA Society of Biochemistry & Molecular Biology (JHB) ()
- SA Society of Cardiovascular Intervention (SASCI)
- SA Society of Clinical Technologists ()
- SA Society of Dairy Technology (SASDT)
- SA Society of Hand Therapists (SASHT)
- SA Society of Head & Neck Oncology ()
- SA Society of Maxillo- Facial & Oral Surgeons (SASMFO)
- SA Society of Obstetricians & Gynaecologists (SASOG)
- SA Society of Occupational Health Nursing Practitioners (SASOHN)
- SA Society of Occupational Medicine (SASOM)