Mario Alfonso Castillo Díaz (born 30 October 1951 in San Miguel, El Salvador) is a retired football player.
[1] Nicknamed Macora, he started his career at local side Dragón when 18 years of age and later played for Águila, with whom he won 3 league titles.
In 1978, he joined the star-studded team of Santiagueño, winning another league title with them, and moved to Alianza in 1984 before returning to Águila to end his career with them.
Since his retirement from football in 1987, he has been working as a sales manager of a car-service company in his hometown.
This biographical article related to Salvadoran association football is a stub.