| Name | Steam ID | Records | WRs |
|---|---|---|---|
| osma bin ballin | 76561198054815524 | 9 | 0 |
| Osminogha | 76561198172697939 | 14 | 0 |
| osmos | 76561198053474514 | 11 | 0 |
| Osnart | 76561198122684842 | 75 | 0 |
| osnaso | 76561199088587693 | 26 | 0 |
| oso|ananus | 76561198045692154 | 4 | 0 |
| oso|drpaine10 | 76561198056258154 | 2 | 0 |
| oso| FAT_Fingers | 76561197971201620 | 5 | 0 |
| oso|KILLERKRONIC | 76561198257329662 | 1 | 0 |
| oso|OrIgIn | 76561198257389032 | 1 | 0 |
| oso|PlasticSashimi | 76561197998882386 | 10 | 0 |
| oso|QuakeRuinedMe | 76561198257609396 | 6 | 0 |
| oso|RosieLarsen | 76561198253955006 | 4 | 0 |
| ossis | 76561198015579018 | 1 | 0 |
| ostapw | 76561198251724794 | 1 | 0 |
| Oster | 76561198278626102 | 300 | 0 |
| Ostkandidat | 76561198004414997 | 1 | 0 |
| Ostrane | 76561198076312847 | 1 | 0 |
| OSTROV040_Ox's | 76561198127068912 | 1 | 0 |
| ota | 76561197967476174 | 1 | 0 |
| oterosantos | 76561198048321884 | 1 | 0 |
| OTG | 76561197971914809 | 1 | 0 |
| other quaker снежный | 76561198344147285 | 1 | 0 |
| Otis | 76561198052862589 | 1 | 0 |
| otjilliu42 | 76561198183831846 | 1 | 0 |
| otoko42 | 76561198023705797 | 1 | 0 |
| OtoTheBestialVomitRs™ | 76561198257833684 | 1 | 0 |
| otpizjunahuy | 76561198074596253 | 5 | 0 |
| Otredys | 76561198158810989 | 1 | 0 |
| OtterWithaRifle | 76561198099074516 | 1 | 0 |
| otto | 76561198122293774 | 1 | 0 |
| OTTO | 76561198156604173 | 5 | 0 |
| Otto Di Catania | 76561198035163952 | 1 | 0 |
| Ottoman | 76561198804785681 | 2 | 0 |
| Otto Pästhnär | 76561198049083873 | 4 | 0 |
| OttuR | 76561198328749191 | 31 | 0 |
| oʇoʎʞ | 76561198252697250 | 1 | 0 |
| Ouchitburns | 76561197990786556 | 1 | 0 |
| ouens are sussing | 76561198043069529 | 1 | 0 |
| Oughie | 76561198044162109 | 1 | 0 |
| ouija | 76561199249275503 | 1 | 0 |
| Ouija | 76561198153957079 | 5 | 0 |
| Ouiji | 76561198047392834 | 1 | 0 |
| ouk. | 76561197960327577 | 1 | 0 |
| Oulsy | 76561198134530936 | 2 | 0 |
| Oumpa | 76561198145898126 | 30 | 0 |
| Ourox | 76561198055182244 | 1 | 0 |
| Ourthaglia | 76561198067003785 | 1 | 0 |
| Out_Brasil | 76561198383687171 | 1 | 0 |
| OutbUrst | 76561198817894870 | 3 | 0 |