Poids Légers Hommes
 | Oron Kahlon | 0-1-0 REC | #5475 |  |
 | Oscar Mendez | 0-1-0 REC | #5204 |  |
 | Oscar Ownsworth | 2-3-0 REC | #3477 |  |
 | Osman Minbatirov | 1-1-0 REC | #5903 |  |
 | Ottman Azaitar | 2-3-0 UFC | #1880 |  |
 | Owen Jason | 1-0-0 REC | #7787 |  |
 | Ozan Aslaner | 3-2-0 REC | #1062 |  |
 | Pablo David | 0-1-0 REC | #7788 | |
 | Paddy Pimblett | 7-1-0 UFC | #54 | |
 | Pat Audinwood | 0-2-0 UFC | #5595 |  |
 | Pat Healy | 0-5-0, 1NC UFC | #2966 | |
 | Pat Jones | 0-1-0 REC | #6972 |  |
 | Patrick Ocheme | 3-0-0 REC | #392 |  |
 | Patricky Pitbull | 1-6-0 REC | #2617 |  |
 | Patrik Sebek | 1-0-0 REC | #2414 |  |
 | Patrik White | 0-1-0 REC | #7608 | |
 | Paul Creighton | 0-1-0 UFC | #6921 | |
 | Paul Felder | 9-6-0 UFC | #866 | |
 | Paul Hughes | 5-2-0 REC | #1430 |  |
 | Paul Redmond | 0-2-0 UFC | #5712 |  |