Cosme Rivera Yucupicio (born 19 July 1976) is a Mexican professional boxer.

Rivera initially played baseball in his native city of Huatabampo.

[1] He began boxing at the age of 15, sneaking out of the house to train at a local gymnasium.

[1] Rivera had a draw in his professional debut on January 1, 1993 vs. Cachorron Diaz.

Rivera got his first title fight on November 22, 1996 vs. Luis Alejandro Ugalde (7-0) in Tijuana, Mexico for the Baja California State Light Welterweight Title, winning by point in 12 rounds.