 Tomasz Sikora | Biatlon |
 Haralds Silovs | Schaatsen |
 Danny Silva | Skiing |
 Ben Sim | Skiing |
 Macarena Simari Birkner | Skiing |
| Maria Belen Simari Birkner | Skiing |
| Cristian Javier Simari Birkner | Skiing |
 Chiara Simionato | Schaatsen |
 Meaghan Simister | Rodelen |
 Matthias Simmen | Biatlon |
| Georgia Simmerling | Skiing |
 Dusan Simocko | Biatlon |
| Davide Simoncelli | Skiing |
 Timo Simonlatser | Skiing |
 Rebecca Sinclair | Skiing |
 Petr Sindelar | Skiing |
| Jana Sisajova | Rodelen |
 Stian Sivertzen | Skiing |
| Eva Skalnikova | Skiing |
 Nadezhda Skardino | Biatlon |
| Blake Skjellerup | Schaatsen |
 Ivan Skobrev | Schaatsen |
| Vibeke Skofterud | Skiing |
| Timofey Skopin | Schaatsen |
 Anastasiya Skryabina | Skiing |