| Link | Location |
|---|
 | John Sickler | Los Angeles (Tustin, Orange County), California, Stati Uniti |
| Craig Sicular | Minneapolis-Optum & United Health, Minnesota, Stati Uniti |
| Aliaksandr Sidarenka | Minsk, Bielorussia |
| Shashikantha Siddaramanahally Lakshmeesha | Munich, Germania |
| Talha Siddiqui | Hyderabad, India |
| Raman Sidhu | Hyderabad, India |
| Viacheslav Sidiachkin | Saint-Petersburg (online), Russia |
| Alexander Sidorov | Moskov, Russia |
| Konstantin Sidorov | Москва, Russia |
| Serioja Sidorov | Hoofddorp, Paesi Bassi |
 | Tom Siebeneicher | Amsterdam, Paesi Bassi |
| Karim Siebenrok | Biberach, Germania |
 | Dominik Sieber | Munich, Germania |
| Chris Siebrand | Apeldoorn, Paesi Bassi |
| Jakub Siedlik | Krakow, Polonia |
