Poids Coqs Hommes
 | Oleg Borisov | 2-1-0 REC | #1858 |  |
 | Oleksii Polischuck | 4-3-0 REC | #1351 |  |
 | Ollie Sarwa | 4-1-0 REC | #1047 |  |
 | Omar El Bily | 0-1-0 REC | #5515 |  |
 | Oseas Cruz Furtado | 0-1-0 REC | #7416 |  |
 | Osimkhon Rakhmonov | 2-0-0 REC | #2029 |  |
 | Otabek Rajabov | 1-0-0 REC | #2868 | |
 | Otar Tanzilov | 0-1-0 REC | #4615 |  |
 | Paddy Holohan | 3-2-0 UFC | #2882 |  |
 | Patchy Mix | 0-2-0 UFC | #1075 |  |
 | Patrik Martinik | 0-1-0 REC | #6588 |  |
 | Patryk Chrobak | 0-1-0, 1NC REC | #6828 |  |
 | Patryk Surdyn | 1-3-0 REC | #3857 | |
 | Paul Denis Navero | 1-0-0 REC | #3827 |  |
 | Paulo Santos | 1-1-0 REC | #7386 | |
 | Pav Sahota | 0-2-0 REC | #5724 | |
 | Pavel Vitruk | 0-3-0 REC | #3072 | |
 | Payton Talbott | 5-1-0 UFC | #233 | |
 | Pedro Falcao | 0-2-0 UFC | #3342 | |
 | Pedro Munhoz | 10-10-0, 2NC UFC | #705 | |