| Name | Steam ID | Records | WRs |
|---|---|---|---|
| ubåt | 76561198839549795 | 1306 | 0 |
| ubcndt | 76561199086566560 | 1 | 0 |
| Uber_Badass #TF2SP | 76561197981991799 | 3 | 0 |
| Ubercactus | 76561197995561233 | 3 | 0 |
| uberschall3330 | 76561198961023846 | 1 | 0 |
| ubey | 76561198201490029 | 1 | 0 |
| Ubik | 76561197962869180 | 1 | 0 |
| Ubiquity | 76561198084992567 | 3 | 0 |
| uca5h | 76561198074564111 | 2 | 0 |
| UcanManda | 76561197996319426 | 3 | 0 |
| ucfnet005 | 76561198032607562 | 1 | 0 |
| Uctac | 76561198121230967 | 1 | 0 |
| Uczulony` | 76561197981072745 | 3 | 0 |
| Udderly the Holy Cow | 76561198125482342 | 497 | 0 |
| udo_sieben | 76561198257877306 | 1 | 0 |
| UFA | 76561198184250154 | 1 | 0 |
| Ufas_treneris | 76561197993257199 | 2 | 0 |
| Ufez Faa | 76561197973555308 | 1 | 0 |
| ufo | 76561198025357940 | 905 | 0 |
| UFO361 | 76561198089320273 | 1 | 0 |
| ufoboss | 76561198257422662 | 1 | 0 |
| UFOVoodoO | 76561197961314683 | 1 | 0 |
| UglyGames | 76561198129183282 | 2 | 0 |
| Uglymofo | 76561198370812539 | 11 | 0 |
| Ugokiwana | 76561198313694397 | 11 | 0 |
| UGotSlade | 76561198076528547 | 2 | 0 |
| [UGO]Zooraw | 76561198206194332 | 1 | 0 |
| U HEZ DIRTY POOPER | 76561198109644371 | 2 | 0 |
| Uhhyaa | 76561197992788427 | 4 | 0 |
| Uhorečka | 76561198070745933 | 1 | 0 |
| uhurtv | 76561199163336834 | 1 | 0 |
| uhuru | 76561198113589016 | 3849 | 0 |
| ui^^ | 76561198867711015 | 7 | 0 |
| uiuiui | 76561198079304337 | 2 | 0 |
| Ujass Eyjafjallajoekull | 76561197969212524 | 1 | 0 |
| [UK]$h | 76561198006676310 | 7 | 0 |
| [UK]atkosas | 76561198257369569 | 2 | 0 |
| [UK] dr4g0nizd | 76561198195105450 | 239 | 0 |
| [UK]ggjkhg | 76561198371241517 | 8 | 0 |
| UkI | 76561199096776303 | 1 | 0 |
| UkiOsu | 76561198100655128 | 2 | 0 |
| _Ukkri6 | 76561198281846341 | 1 | 0 |
| ukminvinc | 76561199028428638 | 1 | 0 |
| [UK]misterph | 76561197988995240 | 1 | 0 |
| Ukropchick | 76561198186514721 | 20 | 0 |
| [UK]RunUm_GunUm | 76561198302321632 | 43 | 0 |
| [UK]Siberianlion | 76561198257357136 | 1 | 0 |
| [UK]wygaz | 76561198162036231 | 3 | 0 |
| ulbens | 76561198934685089 | 2 | 0 |
| Ulick | 76561198098854719 | 4 | 0 |