UFC 317: Topuria vs. Oliveira: UFC 317: Topuria vs. Oliveira was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on June 28, 2025, at T-Mobile Arena in Paradise, Nevada, part of the Las Vegas Valley, United States. A UFC Lightweight Championship bout for the vacant title between former UFC Featherweight Champion Ilia Topuria and former champion Charles Oliveira served as the event's headliner.