| Name | Steam ID | Records | WRs |
|---|---|---|---|
| SiD | 76561197963517494 | 144 | 0 |
| Siddhar | 76561198100961009 | 11 | 0 |
| SideArm7 | 76561197972462096 | 1 | 0 |
| SideofDeath | 76561198143247207 | 29 | 0 |
| Sideway | 76561198064414669 | 6 | 0 |
| SidiR | 76561198057787818 | 15 | 0 |
| Sidorowicz | 76561198137090747 | 27 | 0 |
| Sidu | 76561197965099333 | 9 | 0 |
| Sid Vicious | 76561198080546251 | 1 | 0 |
| SieBen | 76561198058130032 | 3237 | 0 |
| Siegward | 76561198111061651 | 811 | 62 |
| Siema | 76561198057832944 | 1 | 0 |
| siemens726 | 76561198964640702 | 1 | 0 |
| sienna | 76561199429836210 | 3 | 0 |
| Sienna | 76561199795614817 | 2 | 0 |
| Sierra8 | 76561197961709674 | 1 | 0 |
| Sierra [BS Scout] | 76561198028105686 | 2 | 0 |
| Sietse | 76561198051923966 | 12 | 0 |
| Sieve | 76561198021726616 | 1 | 0 |
| Sievers | 76561197988873669 | 1 | 0 |
| siewchoy_lam | 76561199017470718 | 1 | 0 |
| Sif | 76561198116637365 | 1 | 0 |
| sifu | 76561198983569008 | 1 | 0 |
| sig | 76561198398403242 | 1 | 0 |
| SiGamma | 76561198045243743 | 2 | 0 |
| siggie | 76561198044323029 | 24 | 0 |
| siggy | 76561197963198071 | 14 | 0 |
| Siggy | 76561197998989993 | 2 | 0 |
| Siggy Stardust | 76561198054837948 | 1 | 0 |
| sighops | 76561198023123923 | 3 | 0 |
| Sigi | 76561198039848083 | 1 | 0 |
| SIGMA | 76561198043781978 | 1 | 0 |
| sigmaQuakeGamer | 76561199154916191 | 36 | 0 |
| SignalJammer | 76561197999114126 | 1 | 0 |
| signed | 76561197966847242 | 9 | 0 |
| signis | 76561198169315130 | 3 | 0 |
| sign.of.an.open.eye | 76561198835238153 | 1 | 0 |
| sign_painter | 76561199000920373 | 1 | 0 |
| Sigrik | 76561198015041686 | 4 | 0 |
| ŠiguR | 76561198257718851 | 2 | 0 |
| Sigura | 76561198053725890 | 13 | 0 |
| Sigþór the Kiddo 333 | 76561198157314772 | 1 | 0 |
| sihopkins | 76561199388837328 | 1 | 0 |
| siir | 76561198087031206 | 21 | 0 |
| SiJei | 76561198003085401 | 1 | 0 |
| sik- | 76561198123458873 | 13 | 0 |
| Sik | 76561198182982465 | 1 | 0 |
| SIKS | 76561198181887498 | 1 | 0 |
| Sil | 76561198202071886 | 1 | 0 |
| Silas | 76561198101901017 | 1 | 0 |