Sorted alphabetically by last name · 2775 fighters
| Name | Nickname | |
|---|---|---|
| ST | Simeon Thoresen | "The Grin" |
| SL | Sione Latu | |
| SK | Sirwan Kakai | "Zohan" |
| SB | Siyar Bahadurzada | "The Great" |
| SP | Soa Palelei | "The Hulk" |
| SY | Sodiq Yusuff | "Super" |
| SM | Sofia Montenegro | "La Bruja" |
| SH |
| Solomon Hutcherson |
| "King" |
| SK | Song Kenan | "The Assassin" |
| SY | Song Yadong | "Kung Fu Kid" |