| 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 | 662 | 3 |
| oopserv | 76561197964321129 | 1 | 0 |
| Oorly | 76561198073000065 | 1 | 0 |
| oosdja | 76561198041171231 | 8 | 0 |
| oovin | 76561198438574121 | 1 | 0 |
| [OO]YaboiDucki | 76561198195976589 | 2 | 0 |
| OpasnyBiceps | 76561198219126921 | 2 | 0 |
| OPE | 76561197996727011 | 1 | 0 |
| Opeezy | 76561198069508802 | 17 | 0 |
| OpenRift | 76561198123587870 | 1 | 0 |
| open wide and take ur medicine | 76561198856660725 | 2 | 0 |
| Operator | 76561197976105898 | 22 | 0 |
| oper_ru | 76561198135653580 | 5 | 0 |
| op|evilhf | 76561198037188949 | 1 | 0 |
| opexob10 | 76561198093998970 | 1 | 0 |
| opezdol | 76561198397361206 | 2 | 0 |
| opFez | 76561198090166251 | 1 | 0 |
| OP!Grels | 76561197970773675 | 2 | 0 |
| opierdol mi Cobble | 76561198044126433 | 1 | 0 |
| oplexz | 76561198122261704 | 1 | 0 |
| opmAU | 76561198336093185 | 5 | 0 |
| OPM Saitama | 76561198136297350 | 1 | 0 |
| Opp3k | 76561198257674543 | 2 | 0 |
| Oppai Sensei | 76561198116759626 | 2 | 0 |