UFC on ESPN 31: Font vs. Vera was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on April 30, 2022, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A bantamweight bout between Rob Font and Marlon Vera headlined the event. At the weigh-ins, Font weighed in at 138.5 pounds, two and half pounds over the division non-title fight limit. The bout proceeded at a catch-weight with Font forfeiting 20% of his purse to Vera.

UFC on ESPN 31: Font vs. Aldo

Jared Cannonier vs. Sean Strickland (Middleweight)
 Arman Tsarukyan vs. Damir Ismagulov (Lightweight)
 Amir Albazi vs. Alessandro Costa (Flyweight)
 Alex Caceres vs. Julian Erosa (Featherweight)
 Drew Dober vs. Bobby Green (Lightweight)
 Michał Oleksiejczuk vs. Cody Brundage (Middleweight)