Tallison Teixeira (born December 7, 1999) is a Brazilian mixed martial artist who competes in the Heavyweight division of the Ultimate Fighting Championship (UFC). A professional since 2021, Teixeira earned his UFC contract on Dana White's Contender Series, winning by first round KO. As of June 24, 2025, he is #13 in the UFC Heavyweight rankings.
Mixed martial arts career.
Early career.
Teixeira began his professional MMA career in 2021, quickly establishing himself as a heavyweight prospect. Teixeira amassed a record of 6-0 fighting exclusively in Brazil for promotions such as Legacy Fighting Alliance with all his wins coming via first round stoppage. 
Dana White's Contender Series.
Teixeira was then booked to compete on Week 6 of Season 8 of Dana White's Contender Series on September 17, 2024, against fellow Brazilian prospect Arthur Lopes.
He won the fight via first round knockout and was subsequently awarded a contract by Dana White.
Ultimate Fighting Championship.
Teixeira was scheduled to face Łukasz Brzeski at UFC 310 on December 7, 2024. However, Teixeira withdrew from the fight due to injury and was replaced by Kennedy Nzechukwu.
After earning his contract, Teixeira made his UFC debut against Justin Tafa on February 8, 2025, at UFC 312. He won the bout via knockout in the first round thus earning him the "Performance of the Night" bonus.
Teixeira is scheduled to face former UFC Heavyweight Championship challenger Derrick Lewis in the main event of UFC on ESPN 70 on July 12, 2025.