Pat Marcy (September 6, 1913 – March 13, 1993) was a legendary political boss with influence over the Illinois Democratic Party.
According to Federal prosecutors, as well as informants Robert Cooley and Michael J.
Corbitt, he was also a trusted and valued associate of the Chicago Outfit.
His official title was, "Secretary of the First Ward." FBI agent William Roemer believed Marcy to be a made man in the Chicago Outfit when Roemer testified before the U.S.