Mario Montoto (born December 23, 1956, in La Plata) is an Argentine businessman and politician. His company Codesur provides military products and services to the Argentinian military and other clients, and the firm's Global View division supplies surveillance cameras to Buenos Aires and other municipalities.
Montoto is well known for his background as a member of the Montoneros, a Peronist-left guerilla group of the 1970s for which he served as the chief legal advisor and financial officer. He is equally well known for his subsequent transformation into a friend and ally of successive Argentinian presidents, as well as other politicians and businessmen, his connections with whom are considered to be the principal reason for his business success.