Sean Thomas Brady (born November 23, 1992) is an American professional mixed martial artist who currently competes in the Welterweight division of the Ultimate Fighting Championship. As of June 20, 2026, he is #5 in the Meta UFC welterweight rankings.

Brady was raised in Burholme, Philadelphia. While studying at Swenson Arts and Technology High School to become an auto mechanic, Brady started training Muay Thai, subsequently also picking up Brazilian jiu-jitsu.

Spending most of his time in the Cage Fury Fighting Championship, Brady compiled an undefeated 10–0 pro record. Along the way, Brady captured the Welterweight title with a submission win over Mike Jones. Brady then defended his 170-pound championship with a fourth-round knockout over Taj Abdul-Hakim. After this performance, he was given a UFC contract.

In his UFC debut, Brady faced Court McGee on October 18, 2019, at UFC on ESPN 6. He won the fight via a unanimous decision.

Brady faced Ismail Naurdiev on February 29, 2020, at UFC Fight Night 169. He won the fight via unanimous decision.

Brady faced Christian Aguilera at UFC Fight Night: Smith vs. Rakić on August 29, 2020. He won the fight via a guillotine choke in round two. This win earned him the Performance of the Night award.

Brady was expected to face Belal Muhammad on December 19, 2020, at UFC Fight Night 185. However in late October, Brady had a broken nose and had to pull out of their bout.

Brady faced Jake Matthews on March 6, 2021, at UFC 259. He won the fight via a submission in round three.