- sanofi pasteur
- sanofi-aventis
- Schwabe Pharma
- Serum Institute of India
- Servier
- ShenZhen Techdow
- Shilpa Medicare
- Sime Darby Bioganic
- Sime Darby Oils Nutrition
- Siu Guan
- SK bioscience
- SM Pharmaceuticals
- SS Health
- Stadpharm
- Stellapharm
- Stiefel
- Strides Pharma
- Strides Pharma Science
- Sumitomo Dainippon Pharma
- Sumitomo Pharma
- Summit
- Sun Pharma
- Sunward
- Synerrv
- Synmosa