Mario Edgardo Aguilar Posadas (born July 31, 1984 in Metapán) is a Salvadoran footballer who currently plays for Isidro Metapán in the Primera División de Fútbol de El Salvador.
A holding midfielder or central defender, Aguilar has played his entire football career for his hometown club Isidro Metapán.
Aguilar made his debut for El Salvador as a late substitute in an October 2008 FIFA World Cup qualification match against Haiti which proved to be his only international up until October 2010.