Sorted alphabetically by last name · 2780 fighters
| Name | Nickname | |
|---|---|---|
| SM | Stipe Miocic | |
| SY | SuYoung You | "Yoo-Jitsu" |
| S | Sulangrangbo | |
| SA | Sultan Aliev | |
| SM | Suman Mokhtarian | |
| S | Sumudaerji | "The Tibetan Eagle" |
| SB | Sung Bin Jo | "Korean Falcon" |
| SK | Syuri Kondo |
| TB | TJ Brown | "Downtown" |
| TD | TJ Dillashaw |