- Sinan Derindere
- Sinan Erzurumlu
- Sinan Gürel
- Sinem Mutlu
- Siqian Shen
- Siriphong (Toi) Lawphongpanich
- Sirkka L. Jarvenpaa
- Siu Chung Leung
- Siva Theja Maguluri
- Siva Viswanathan
- Sixto Ríos- Insua
- Siyang Xie
- Siyin Chen
- Siyu Shi
- Siyuan Liu
- Slobodan Mitric
- Sneha Thakkar
- Societé Nationale des Chemins de Fer Français (SNCF)
- Societé Nationale des Chemins de Fer Français (SNCF)
- Sofia Bapna
