Mariano David Dalla Libera (born 4 April 1964) is an Argentine former professional footballer who played as a midfielder.
Dalla Libera grew up in Los Polvorines, Argentina.
Dalla Libera was nicknamed "Loco". In 1991, he signed for Mexican side Puebla, where he suffered an injury. In 1994, he signed for Argentine side Platense.
Dalla Libera mainly operated as a midfielder and was known for his creativity.
After retiring from professional football, Dalla Libera raced in the TC Pista. He also competed in Argentine television show MasterChef Celebrity Argentina.
Dalla Libera has three grandchildren.