Matías Ariel Fernández Fernández (Spanish pronunciation: [ma'ti.as a'?jel fe?'nandes fe?'nandes], born 15 May 1986) is a Chilean professional footballer who plays for Colombian club Atlético Junior as an attacking midfielder.
He is known for his dribbling skills, also being a free-kick specialist.
After starting out at Colo-Colo, he played several seasons with Villarreal, Sporting and Fiorentina, moving to Europe in 2006.
Fernández was elected South American Footballer of the Year in 2006, and also appeared for the Chilean national team in the 2010 World Cup and three Copa América tournaments, winning the 2015 edition of the latter tournament.