| Name | Steam ID | Records | WRs |
|---|---|---|---|
| oneofthems | 76561198043124028 | 1 | 0 |
| oneportion | 76561199218289965 | 1 | 0 |
| OnePunch | 76561198090784344 | 1 | 0 |
| OneShot | 76561197983242292 | 5 | 0 |
| onesomeplay | 76561198047976022 | 1 | 0 |
| one_winged_angel | 76561198055960098 | 1 | 0 |
| Ongame04 | 76561198318976220 | 1 | 0 |
| oni | 76561197994932298 | 2 | 0 |
| ONIKS | 76561198142502594 | 137 | 0 |
| onion | 76561198166986097 | 1 | 0 |
| OnionBro | 76561198025714110 | 1 | 0 |
| onions | 76561197963617352 | 3 | 0 |
| onkel | 76561197974110254 | 62 | 0 |
| OnlyAOEdamage | 76561198054122195 | 53 | 0 |
| only a potato | 76561198086851988 | 3 | 0 |
| Only carry\1 position | 76561198199555206 | 1 | 0 |
| #OnlyFans,com | 76561198351647456 | 7 | 0 |
| onlyfans.com/cayde6 | 76561198110723124 | 1 | 0 |
| onlyGetsHardFromFeet | 76561198028718812 | 1 | 0 |
| only god can pudge me | 76561198166898516 | 1 | 0 |
| ONLYIWILLREMAIN | 76561198006354537 | 2 | 0 |
| Onnanitta | 76561198002912396 | 1 | 0 |
| Onodiji | 76561198355536076 | 14 | 0 |
| Onslau | 76561198128841305 | 2 | 0 |
| onslaut22 | 76561198313508091 | 1 | 0 |
| onsomeshit chad | 76561198104315478 | 21 | 0 |
| Onur ( GER ) | 76561198077130482 | 1 | 0 |
| onurkiris | 76561198126449253 | 0 | 0 |
| ONYX | 76561198257557624 | 1 | 0 |
| onyx.cyb3k | 76561198242829554 | 1 | 0 |
| onzzya | 76561198273062751 | 1 | 0 |
| o.O | 76561198002811497 | 2 | 0 |
| oO | 76561198012093545 | 2 | 0 |
| (O﹏o) ♥ ╚╦╬╦╝ | 76561198259234271 | 27 | 0 |
| ooby | 76561197972865093 | 6 | 0 |
| oof | 76561198079477583 | 1 | 0 |
| OOF Jlg387 | 76561198089389879 | 5 | 0 |
| OogaBooga | 76561198047425445 | 2 | 0 |
| Ooh bOI | 76561198123811280 | 1 | 0 |
| Ooh La-La | 76561198325358620 | 2 | 0 |
| Oomlot | 76561198080714132 | 2 | 0 |
| oomomo | 76561198039718033 | 1 | 0 |
| Oonbiter | 76561198202612121 | 21 | 0 |
| oooMARCINooo | 76561198164708151 | 8 | 0 |
| OOOOOOOOOOOOOOOOOOOOOO0OOOOOOOOO | 76561198071291030 | 1 | 0 |
| oooooxygn+ | 76561199184420757 | 70 | 0 |
| oooStrateg | 76561198275610737 | 1 | 0 |
| oOpSa | 76561197966189586 | 655 | 3 |
| Oorly | 76561198073000065 | 1 | 0 |
| oosdja | 76561198041171231 | 8 | 0 |