Omar Andrés Narváez is an Argentine professional boxer. He is a two-weight world champion, having held the WBO flyweight title from 2002 to 2010, and the WBO junior bantamweight title from 2010 to 2014. As an amateur, Narváez represented Argentina at the 2000 Olympics, reaching the round of 16 of the super flyweight bracket.

The World Boxing Organization (WBO) is an organization which sanctions professional boxing bouts. It is recognized by the International Boxing Hall of Fame (IBHOF) as one of the four major world championship groups, alongside the World Boxing Association (WBA), World Boxing Council (WBC), and International Boxing Federation (IBF). The WBO's headquarters are located in San Juan, Puerto Rico.