UFC flyweight Allan Nascimento has died, the promotion announced Monday. He was 34.
The Brazilian fighter was found unresponsive Monday morning after "suffering an apparent heart attack in his sleep," the UFC said in a statement.
"Despite the efforts of the responding medical team, he was pronounced deceased at the scene," the statement read. "Our thoughts and deepest condolences are with Allan's family, friends, teammates, and loved ones during this incredibly difficult time."
This morning, Monday, August 3rd, our beloved flyweight fighter, Allan Nascimento, was found unresponsive after suffering an apparent heart attack in his sleep. Despite the efforts of the responding medical team, he was pronounced deceased at the scene.
— UFC (@ufc) August 3, 2026
Our thoughts and deepest… pic.twitter.com/vlaBaBOyJr
Nascimento last fought June 20, losing a split decision to Mitch Raposo at a UFC Fight Night event in Las Vegas.
The Sao Paulo native spent almost five years in the UFC, putting together a 4-2 record in six Octagon appearances. He won four consecutive fights between May 2022 and November 2025, including victories over Cody Durden and Jake Hadley.
