Combattants Etats-Unis
| 1826 |  | Nick Urso | 0-1-0 REC | #6072 |  |
| 1827 |  | Nik Lentz | 14-9-1, 1NC UFC | #350 | |
| 1828 |  | Niko Price | 8-10-0, 2NC UFC | #852 | |
| 1829 |  | Nikol Aguirre | 0-1-0 REC | #5201 | |
| 1830 |  | Nina Nunes | 5-4-0 UFC | #1903 | |
| 1831 |  | Nissen Osterneck | 0-1-0 UFC | #6076 | |
| 1832 |  | Noah Bey | 2-2-0 REC | #1483 | |
| 1833 |  | Noah Gasho | 2-0-0 REC | #680 | |
| 1834 |  | Noah Lindsey | 0-1-0 REC | #6641 | |
| 1835 |  | Noe Hernandez | 0-1-0 UFC | #4914 | |
| 1836 |  | Nohelin Hernandez | 0-2-0 UFC | #5946 | |
| 1837 |  | Nolan Linebaugh | 1-0-0 REC | #2076 | |
| 1838 |  | Nolan Ticman | 0-2-0 UFC | #5632 | |
| 1839 |  | Noufel El Kasri | #7249 | | |
| 1840 |  | Ode Osbourne | 5-8-0 UFC | #790 | |
| 1841 |  | Olivia Hendrickson | 1-0-0 REC | #4766 | |
| 1842 |  | Olivia Parker | 0-1-0 REC | #4968 | |
| 1843 |  | Oluwale Bamgbose | 1-4-0 UFC | #3291 | |
| 1844 |  | Omoyele Gonzalez | 0-1-0 REC | #5310 | |
| 1845 |  | Orion Cosce | 1-2-0 UFC | #3679 | |
| 1846 |  | Orlando Sanders | 0-1-0 REC | #6959 | |
| 1847 |  | Oseyiomon Oiyemhonlan | 1-2-0 REC | #4261 | |
| 1848 |  | Ovince St. Preux | 15-13-0 UFC | #254 | |
| 1849 |  | Ozzy Diaz | 1-1-0 UFC | #1830 | |
| 1850 |  | Pablo Garza | 3-3-0 UFC | #2869 | |