Gus Alex (April 1, 1916 – July 24, 1998) was a Greek-American mobster and high-ranking member of the Chicago Outfit, who succeeded Jake Guzik as the Syndicate's main political "fixer".
According to William F. Roemer,
"Gus, being Greek, could not be 'made,' but he had done it all. His dad had operated a small restaurant at Wentworth and 26th in Armour Square/Chinatown, which was frequented by many members of the Capone, and then the Nitti, mob. Gus and Strongy [Ferraro] had worked in the restaurant from an early age. Both were sharp guys and came to the attention of the boys. Gus had, therefore, been one of them almost since birth.
Working primarily for Al Capone's Jewish-American associate, Jake Guzik, Alex would later become his protégé as he rose through the ranks of the Chicago crime family. By 1930, he was suspected in the deaths of at least five unsolved murder cases. Two of the alleged victims, later dying of their injuries in hospital, identified Alex as their assailant as well as three others who were killed after reporting to police extortion and death threats sent by Alex.
Under Guzik's guidance, Alex became experienced in securing Syndicate protection through bribery of city officials. By the mid-1940s, Alex was the main liaison between the Chicago Outfit and city hall officials. He granted control of the Loop's illegal gambling and prostitution operations, including a lucrative call girl operation out of prominent downtown hotels (of which many call girls were paid up to $500 to $1,000) Alex's operations brought in an estimated $1 million a month for the Syndicate.