Ismael Mario Zambada García (born January 1, 1948), also known as El Mayo, is a Mexican former drug lord and former member of Sinaloa Cartel, an international crime syndicate based in the state of Mexico. Before he assumed leadership of the entire cartel, he allegedly served as the logistical coordinator for its Zambada García faction, which has overseen the trafficking of cocaine and heroin into Chicago and other US cities by aircraft, narcosubs, container ships, go-fast boats, fishing vessels, buses, rail cars, tractor trailers, and automobiles.