| Fighter | Record | Last Bout |
|---|---|---|
| Steve Judson | 0-2-0 | 2000-03-10 |
| Steve Kennedy | 24-8-0 | 2015-11-14 |
| Steve Lopez | 13-6-1 | 2010-09-25 |
| Steve Montgomery | 9-5-0 | 2015-11-14 |
| Steve Nelmark | 2-1-0 | 1996-12-07 |
| Steve Steinbeiss | 9-4-0 | 2010-08-01 |
| Steve Vigneault | 12-6-0 | 2006-03-04 |
| Steven Asplund | 8-2-0 | 2026-08-08 |
| Steven Graham | 2-1-0 | 1997-05-30 |
| Steven Koslow | 6-1-0 | 2026-10-17 |
| Steven Nguyen | 10-2-0 | 2025-07-26 |
| Steven Peterson | 19-11-0 | 2023-03-25 |
| Steven Siler | 29-16-0 | 2014-07-26 |
| Stevie Lynch | 5-2-0 | 2007-06-16 |
| Stevie Ray | 23-9-0 | 2019-10-26 |
| Stewart Nicoll | 8-4-0 | 2026-07-18 |
| Stipe Miocic | 20-5-0 | 2024-11-16 |
| Sulangrangbo | 10-4-0 | 2026-01-31 |
| Sultan Aliev | 15-3-0 | 2019-04-20 |
| Suman Mokhtarian | 8-5-0 | 2019-12-21 |
| Sumudaerji | 20-7-0 (1 NC) | 2026-08-29 |
| Sung Bin Jo | 9-1-0 | 2019-06-01 |
| SuYoung You | 16-4-0 (2 NC) | 2026-03-14 |
| Syuri Kondo | 6-3-0 | 2019-06-22 |
| Tabatha Ricci | 12-5-0 | 2026-07-18 |
| Tae Hyun Bang | 18-10-0 | 2016-09-03 |
| Tafon Nchukwi | 6-4-0 | 2023-08-12 |
| Tagir Ulanbekov | 17-3-0 | 2025-11-22 |
| Tahir Abdullayev | 20-3-0 | 2026-06-27 |
| Tai Bowden | 1-1-0 | 1996-12-07 |
| Tai Tuivasa | 15-10-0 | 2026-09-19 |
| Taila Santos | 19-3-0 | 2023-08-26 |
| Tainara Lisboa | 7-4-0 | 2026-10-31 |
| Taiyilake Nueraji | 12-1-0 (1 NC) | 2025-08-23 |
| Takanori Gomi | 35-14-0 (1 NC) | 2017-09-22 |
| Takashi Sato | 16-7-0 | 2023-05-20 |
| Takenori Sato | 19-11-7 (1 NC) | 2014-09-20 |
| Takeya Mizugaki | 21-11-2 | 2016-12-17 |
| Talita Alencar | 8-1-1 | 2026-04-25 |
| Talita Bernardo | 6-4-0 | 2019-05-11 |
| Tallison Teixeira | 9-2-0 | 2026-05-30 |
| Tamdan McCrory | 14-5-0 | 2016-10-01 |
| Tamires Vidal | 7-4-0 | 2024-10-19 |
| Tanner Boser | 22-11-1 | 2026-10-17 |
| Tarec Saffiedine | 16-7-0 | 2017-06-17 |
| Tateki Matsuda | 13-8-0 | 2015-01-18 |
| Tatiana Suarez | 13-1-0 | 2026-04-11 |
| Tatsuro Taira | 18-2-0 | 2026-05-09 |
| Tatsuya Kawajiri | 36-11-2 | 2016-08-06 |
| Taylor Lapilus | 21-4-0 | 2024-09-28 |