| Nationality | Name | Wins | Losses |
|---|---|---|---|
| Nationality | Name | Wins | Losses |
| Chinese | Huang Shuailu | 35 | 8 |
| Italy | Fabio Siciliani | 59 | 15 |
| Dutch | Fred Sikking | 49 | 32 |
| Samoan & American | Mighty Mo Siligia | 20 | 22 |
| Brazilian | Anderson Silva | 44 | 20 |
| Brazilian | Antônio Silva | 2 | |
| Surinamese Dutch | Rayen Simson | 102 | 19 |
| Thai | Apidej Sit Hrun | 74 | 23 |
| Nong-O Sit Or | 265 | 55 | |
| Thai | Yodkhunpon Sitmonchai | ||
| Thai | Kem Sitsongpeenong | 130 | 26 |
| Thai | Sitthichai Sitsongpeenong | 128 | 33 |
| Thai | Thongchai Sitsongpeenong | 138 | 39 |
| Thai | Littewada Sitthikul | 66 | 21 |
| Václav Sivák | 23 | 0 | |
| Jean-Charles Skarbowsky | 75 | 23 | |
| Czech | Daniel Škvor | 26 | 10 |
| Belarus | Valentin Slavikovski | ||
| Paul Slowinski | 106 | 22 | |
| Dutch | Peter Smit | 17 | 6 |