Edgar Esteban Dueñas Peñaflor (born 5 March 1983) is a Mexican former professional footballer who played as a defender.

During the 2011 CONCACAF Gold Cup, Dueñas, and four other members of the Mexico national team, tested positive for the banned substance of Clenbuterol and were withdrawn from the squad.

[3] Later, all players were exonerated as FIFA determined that the accused had ingested the banned substance through contaminated meat that had been inadvertently served during a pre-tournament training camp.

[4] However, World Anti-Doping Agency appealed to the Court of Arbitration for Sport to request a ban.

This biographical article related to a Mexican association football defender is a stub.