Agustín Alexandro Santiago Barrios (born 7 February 1996) is a Mexican professional boxer.
He held the WBC bantamweight title from July 2023 to February 2024.
After Naoya Inoue moved up to super bantamweight, vacating his undisputed bantamweight titles,[1] it was announced that the WBC has approved a WBC Bantamweight championship bout between Santiago and former 40 year old four-division world champion Nonito Donaire.
[2] On July 13, 2023, it was announced the bout would be moved to Errol Spence Jr. vs. Terence Crawford undercard.
[3] On July 29, Santiago defeated Donaire in very close fight via unanimous decision.