Combattants Etats-Unis
| 1926 |  | Nick Roehrick | 0-1-0 UFC | #6165 |  |
| 1927 |  | Nick Rossborough | 0-1-0 REC | #7699 | |
| 1928 |  | Nick Sanzo | 1-1-0 UFC | #5577 | |
| 1929 |  | Nick Serra | 0-1-0 UFC | #5956 | |
| 1930 |  | Nick Thompson | 1-1-0 UFC | #4868 | |
| 1931 |  | Nick Urso | 0-1-0 REC | #7023 | |
| 1932 |  | Nik Lentz | 14-9-1, 1NC UFC | #414 | |
| 1933 |  | Niko Price | 8-11-0, 2NC UFC | #794 | |
| 1934 |  | Nikol Aguirre | 0-1-0 REC | #6639 | |
| 1935 |  | Nina Nunes | 5-4-0 UFC | #1996 | |
| 1936 |  | Nissen Osterneck | 0-1-0 UFC | #7063 | |
| 1937 |  | Noah Bey | 3-2-0 REC | #1060 | |
| 1938 |  | Noah Gasho | 4-0-0 REC | #324 | |
| 1939 |  | Noah Hermosillo | 1-0-0 REC | #2022 | |
| 1940 |  | Noah Lindsey | 0-1-0 REC | #7654 | |
| 1941 |  | Noe Hernandez | 0-1-0 UFC | #5426 | |
| 1942 |  | Nohelin Hernandez | 0-2-0 UFC | #6627 | |
| 1943 |  | Nolan Linebaugh | 1-0-0 REC | #3314 | |
| 1944 |  | Nolan Ticman | 0-2-0 UFC | #5465 | |
| 1945 |  | Noufel El Kasri | #7993 | | |
| 1946 |  | Nyle Bartling | 0-1-0 REC | #6550 | |
| 1947 |  | Ode Osbourne | 5-7-0, 1NC UFC | #1095 | |
| 1948 |  | Olivia Hendrickson | 1-0-0 REC | #5117 | |
| 1949 |  | Olivia Parker | 0-1-0 REC | #5304 | |
| 1950 |  | Oluwale Bamgbose | 1-4-0 UFC | #3765 | |