UFC 301: Pantoja vs. Erceg was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on May 4, 2024, at the Farmasi Arena, in Rio de Janeiro, Brazil.

[2] A UFC Flyweight Championship bout between current champion Alexandre Pantoja and Steve Erceg headlined the event.

[5] The pair was previously expected to meet at UFC Fight Night: Almeida vs. Lewis but the bout was scrapped after Bonfim missed weight.

[8] He was replaced by Ihor Potieria, who was also scheduled to compete against Sharabutdin Magomedov at UFC on ABC: Whittaker vs. Chimaev on June 22.

[11] During the event's broadcast, former UFC Light Heavyweight Champion (also the 2005 PRIDE Middleweight Grand Prix Champion) Maurício Rua was announced as the next "pioneer wing" UFC Hall of Fame inductee during June's International Fight Week festivities in Las Vegas.