Sorted alphabetically by last name · 2756 fighters
| Name | Nickname | |
|---|---|---|
| SO | Sean O'Connell | "The Real OC" |
| SO | Sean O'Malley | "Suga" |
| SP | Sean Pierson | "The Punisher" |
| SS | Sean Salmon | |
| SS | Sean Sharaf | "The Smoke" |
| SS | Sean Sherk | "The Muscle Shark" |
| SS | Sean Soriano | |
| SS | Sean Spencer |
| "Black Magic" |
| SS | Sean Strickland |
| SW | Sean Woodson | "The Sniper" |