| Fighter | Record | Last Bout |
|---|---|---|
| Aljamain Sterling | 26-5-0 | 2026-04-25 |
| Anthony Smith | 38-22-0 | 2025-04-26 |
| Ariane da Silva | 17-11-0 | 2025-06-07 |
| Axel Sola | 13-1-1 | 2026-09-05 |
| Baisangur Susurkaev | 12-0-0 | 2026-05-09 |
| Benardo Sopaj | 13-3-0 | 2026-10-03 |
| Benoit Saint Denis | 17-4-0 (1 NC) | 2026-07-11 |
| Bruno Silva | 23-13-0 | 2025-05-10 |
| Bruno Silva | 15-9-2 (1 NC) | 2026-06-06 |
| Cameron Saaiman | 9-3-0 | 2025-04-26 |
| Cameron Smotherman | 12-7-0 | 2026-05-30 |
| Cody Stamann | 21-8-1 | 2024-11-09 |
| Cory Sandhagen | 18-7-0 | 2026-07-11 |
| Cub Swanson | 31-14-0 | 2026-04-11 |
| Daniel Santos | 14-3-0 | 2026-05-16 |
| Danny Silva | 11-2-0 | 2026-03-21 |
| Djorden Santos | 11-3-0 | 2026-09-12 |
| Douglas Silva de Andrade | 29-7-0 (1 NC) | 2026-02-28 |
| Dustin Stoltzfus | 17-8-0 | 2026-08-15 |
| Edmen Shahbazyan | 16-6-0 | 2026-09-19 |
| Elijah Smith | 10-1-0 | 2026-03-14 |
| Elizeu Zaleski dos Santos | 25-10-1 | 2025-08-02 |
| Erik Silva | 9-4-0 | 2026-02-28 |
| Fabia Sintes | 12-3-0 | 2026-09-05 |
| Felipe dos Santos | 8-3-0 (1 NC) | 2025-03-22 |
| Gable Steveson | 4-0-0 | 2026-09-19 |
| Gabriel Santos | 12-2-0 | 2025-02-08 |
| Gokhan Saricam | 12-2-0 | 2026-04-18 |
| Hecher Sosa | 15-1-0 | 2026-03-14 |
| Hector Santiago | 7-1-0 | 2026-08-29 |
| Jack Shore | 17-3-0 | 2024-11-02 |
| Jacobe Smith | 12-0-0 | 2026-02-21 |
| Jamie Siraj | 14-4-0 | 2026-04-18 |
| Jean Silva | 17-3-0 | 2026-09-12 |
| Jeka Saragih | 14-5-0 | 2025-06-07 |
| Jeremy Stephens | 29-23-0 (1 NC) | 2026-05-09 |
| Joaquim Silva | 14-6-0 | 2025-09-13 |
| Joe Solecki | 13-6-0 | 2025-01-11 |
| Jose Souza | 9-1-0 | 2026-05-30 |
| Julija Stoliarenko | 11-10-2 | 2025-08-09 |
| Karine Silva | 19-7-0 | 2026-04-18 |
| Ketlen Souza | 17-6-0 | 2026-06-06 |
| Kiru Sahota | 12-3-0 | 2024-11-23 |
| Klaudia Sygula | 8-3-0 | 2026-09-05 |
| Kody Steele | 8-1-0 | 2026-05-02 |
| Leon Shahbazyan | 12-5-0 | 2026-06-20 |
| Louie Sutherland | 11-6-0 | 2026-08-08 |
| Luana Santos | 11-2-0 | 2026-06-20 |
| Lucia Szabova | 12-0-0 | 2026-10-31 |
| Mairon Santos | 18-1-0 | 2025-12-06 |