Cosme Rivera Yucupicio (born 19 July 1976) is a Mexican professional boxer. He held the WBO–NABO light welterweight title in 1999, the WBC Continental Americas light welterweight title in 2002, the WBA Fedecentro & WBO Latino welterweight titles in 2006 and the WBC Latino light welterweight title in 2011. He also fought for a unified welterweight world title in 2005.