Tous les combattants
 | Umakhan Ibragimov | 1-0-0 REC | #6320 |  |
 | Umalat Israpilov | 3-0-0 REC | #1785 | |
 | Umalatbek Mukhadzhirov | 0-1-0 REC | #7326 | |
 | Umar Imanshapiev | 0-1-0 REC | #6670 | |
 | Umar Nurmagomedov | 8-1-0 UFC | #58 | |
 | Umarali Maripov | 1-1-0 REC | #4331 |  |
 | Umberto di Munno | 0-1-0 REC | #5209 |  |
 | Umut Birdal | 0-1-0 REC | #5644 |  |
 | Uran Satybaldiev | 1-1-0 UFC | #1311 |  |
 | Uriah Hall | 10-9-0 UFC | #655 |  |
 | Urijah Faber | 11-7-0 UFC | #403 |  |
 | Uros Medic | 7-3-0 UFC | #255 |  |
 | Usman Nurmagomedov | 7-0-0, 1NC REC | #391 | |
 | Ustarmagomed Gadzhidaudov | 0-1-0 REC | #5130 | |
 | Uwe Schuder | 0-1-0 REC | #4970 |  |
 | Uzair Abdurakov | 1-2-0 REC | #2033 | |
 | Vaclav Holota | 4-1-0 REC | #3523 |  |
 | Vaclav Mikulasek | 2-5-0 REC | #3464 | |
 | Vaclav Stepan | 2-0-0 REC | #717 | |
 | Vadim Fialkovskiy | 1-0-0 REC | #1523 | |
 | Vadim Israfilov | 0-1-0 REC | #7866 | |
 | Vadim Kadyrov | 1-0-0 REC | #1990 | |
 | Vadim Kutsy | 0-1-0 REC | #6274 |  |
 | Vadim Nemkov | 5-0-0, 1NC REC | #839 | |
 | Vadim Ogar | 2-1-0 REC | #1692 | |