| o.O | 76561198002811497 | 2 | 0 |
| oO | 76561198012093545 | 2 | 0 |
| (O﹏o) ♥ ╚╦╬╦╝ | 76561198259234271 | 27 | 0 |
| Öö | 76561198883155696 | 1 | 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 |
| oooStrateg | 76561198275610737 | 1 | 0 |
| oopsa | 76561197966189586 | 663 | 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 |
| operation deranged epic failurey | 76561198983272256 | 3 | 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 |
| OppoiJaegr | 76561198182572531 | 8 | 0 |
| opp ƪµɱµkἀηᶑα | 76561198212355911 | 1 | 0 |
| OPRAH | 76561198216472764 | 2 | 0 |
| opt1cx | 76561198070081273 | 3 | 0 |
| oPti | 76561197989065442 | 4 | 0 |
| Opticalx | 76561199227344506 | 28 | 0 |
| Optigrill | 76561198051844735 | 4 | 0 |
| Optixx | 76561197984554346 | 1 | 0 |
| optkz | 76561197985276193 | 3 | 0 |
| Optrix | 76561198147972397 | 1 | 0 |