| Treston Thomison | |
| Birth Place: | Sulphur, Oklahoma, United States |
| Nationality: | American |
| Height: | 5 ft 8 in |
| Weight: | 145.9 lb |
| Weight Class: | Lightweight Featherweight |
| Reach: | 67 in |
| Stance: | Orthodox |
| Fighting Out Of: | Sulphur, Oklahoma, United States |
| Years Active: | 2009-present |
| Mma Kowin: | 1 |
| Mma Subwin: | 8 |
| Mma Decwin: | 1 |
| Mma Koloss: | 3 |
| Mma Subloss: | 1 |
| Mma Decloss: | 2 |
| Sherdog: | 48473 |
Treston Thomison is an American[1] mixed martial artist who competes in the Featherweight division of Bellator MMA. A professional competitor since 2009, he has also competed for King of the Cage.
|-| Loss| align=center| 10–6| Justin Lawrence| TKO (doctor stoppage)| Bellator 181| | align=center| 1| align=center| 3:34| Thackerville, Oklahoma, United States|Return to Featherweight.|-| Loss| align=center| 10–5| Emmanuel Rivera| Decision (unanimous)| Bellator 174| | align=center| 3| align=center| 5:00| Thackerville, Oklahoma, United States|Catchweight (151 lbs) bout.|-| Win| align=center| 10–4| Dawond Pickney| Submission (armbar)| Bellator 166| | align=center| 1| align=center| 0:51| Thackerville, Oklahoma, United States|Lightweight debut.|-| Win| align=center| 9–4| Aaron Roberson| Submission (guillotine choke)| Bellator 151| | align=center| 2| align=center| 2:20| Thackerville, Oklahoma, United States||-| Loss| align=center| 8–4 | Chris Jones| Decision (unanimous)| Bellator 146| | align=center| 3| align=center| 5:00| Thackerville, Oklahoma, United States|Catchweight (150 lbs) bout.|-| Loss| align=center| 8-3| Cody Walker| KO (head kick)| Bellator 128| | align=center| 2| align=center| 4:59| Thackerville, Oklahoma, United States| |-| Win| align=center| 8-2| Stephen Banaszak| Submission (guillotine choke)| Bellator 121| | align=center| 1| align=center| N/A| Thackerville, Oklahoma, United States| |-| Loss| align=center| 7-2| Stephen Banaszak| Submission (armbar)| Bellator CXIX| | align=center| 1| align=center| 4:56| Rama, Ontario, Canada| |-| Win| align=center| 7-1| Jade Porter| Submission (armbar)| KOTC: Regulators| | align=center| 1| align=center| 0:18| Scottsdale, Arizona, United States| |-| Win| align=center| 6-1| Daniel Armendariz| KO (punch)| KOTC: Aerial Assault| | align=center| 1| align=center| 0:31| Thackerville, Oklahoma, United States| |-| Win| align=center| 5-1| Brian Joseph| Submission (armbar)| KOTC: Bad Intentions II| | align=center| 1| align=center| 1:51| Thackerville, Oklahoma, United States| |-| Loss| align=center| 4-1| Mike Maldonado| KO (punches)| KOTC: Total Destruction| | align=center| 1| align=center| 0:31| Thackerville, Oklahoma, United States| |-| Win| align=center| 4-0| Anthony Kellen| Decision (split)| KOTC: Apocalypse| | align=center| 3| align=center| 5:00| Thackerville, Oklahoma, United States| |-| Win| align=center| 3-0| Scott Bear| Submission (rear-naked choke)| KOTC: Epic Force| | align=center| 1| align=center| 1:18| Thackerville, Oklahoma, United States| |-| Win| align=center| 2-0| Cris Leyva| Submission (armbar)| KOTC: Underground 67| | align=center| 1| align=center| 2:13| Cortez, Colorado, United States| |-| Win| align=center| 1-0| Kyle Waag| Submission| FCF: Freestyle Cage Fighting 43| | align=center| 1| align=center| 0:29| Claremore, Oklahoma, United States|
|-| Win| align=center| 4-0| Charles Anderson| Submission (rear-naked choke)| FCF: Freestyle Cage Fighting 39| | align=center| 1| align=center| 0:20| Shawnee, Oklahoma, United States| |-| Win| align=center| 3-0| Robert Pickle| Submission| FCF: Freestyle Cage Fighting 33| | align=center| 3| align=center| 0:27| Durant, Oklahoma, United States| |-| Win| align=center| 2-0| Steven Tackett| Submission (armbar)| FCF: Freestyle Cage Fighting 31| | align=center| 1| align=center| 1:01| Tulsa, Oklahoma, United States| |-| Win| align=center| 1-0| Charles Evans| Submission (rear-naked choke)| FCF: Freestyle Cage Fighting 30| | align=center| 1| align=center| 0:20| Shawnee, Oklahoma, United States|