| Name | Steam ID | Records | WRs |
|---|---|---|---|
| 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 |
| Siku | 76561199232158888 | 638 | 0 |
| Sil | 76561198202071886 | 1 | 0 |
| Silas | 76561198101901017 | 1 | 0 |
| Silchas | 76561197965173937 | 1 | 0 |
| † Silence † | 76561198196984373 | 4 | 0 |
| Silence | 76561198039192945 | 1 | 0 |
| SilentAngel | 76561198128469397 | 13 | 0 |
| Silent Bob | 76561197974121771 | 1 | 0 |
| Silentdeath | 76561197971811193 | 1 | 0 |
| SilentJoNn | 76561198036566954 | 3 | 0 |
| SILENTKILLR*** | 76561198048043836 | 1 | 0 |
| silentrage | 76561198045095735 | 1 | 0 |
| SilentRob | 76561198071066357 | 1 | 0 |
| silentsod | 76561197963680150 | 19 | 0 |
| Silent warrior | 76561198046765025 | 4 | 0 |
| silentXkiIIer | 76561198190160191 | 143 | 0 |
| SilentYuki | 76561197998997101 | 158 | 0 |
| <SÎl∨êr)♋ | 76561198167590208 | 1 | 0 |
| Silesian Guard | 76561197974094012 | 1 | 0 |
| Silikone | 76561197971410481 | 31 | 0 |
| silk | 76561199075278835 | 2 | 0 |
| Silk Road | 76561198103215838 | 3 | 0 |
| Silk Road // UGLYAdri | 76561198141220557 | 2 | 0 |
| SillyGoose2064 | 76561197984053918 | 1 | 0 |
| SillyMaple | 76561198092796105 | 1 | 0 |
| sillysalami7 | 76561198086591315 | 14 | 0 |