Mario Alfredo Salas Saieg (, born 11 October 1967) is a Chilean football manager and former player who played as a midfielder.
Salas earned five caps for the Chile national team, scoring no goals between 1993 and 1997, and made his debut in 1993 in a friendly match against Spain in Alicante. He started his managerial career at Barnechea in 2009. In 2011, he won the Tercera División de Chile title and the promotion to Primera B. In 2012, he was appointed as head coach of the Chile U20 national team after the resignation of Fernando Carvallo.
As a football coach, Salas started his career as an assistant for Universidad de Concepción, Unión Española and Everton de Viña del Mar.
Salas married the personal trainer Nathalie Pizarro in December 2025.
He completed his BA in Physical education at the Pontifical Catholic University of ValparaÃÂso.