Jack Diamond, New York Prohibition gangster.
John Lazia, Tom Pendergast gang leader and enforcer.
Paul Ricca (Paolo deLucia), Chicago Outfit leader.
Joseph Zerilli, Detroit crime family leader and former Eastside Gang and Pascuzzi Combine member.
February 6 - Louis Buchalter, National Crime Syndicate member.
April 7 - Walter Winchell, New York organized crime journalist.
October 2 - Joe Profaci (Joseph Profaci), Profaci Crime Family founder and Cosa Nostra leader.
November 24, Charles Luciano (Salvatore Lucania), National Crime Syndicate founder and New York Mafia Don.
November 27 - Vito Genovese, Genovese crime family founder and Cosa Nostra leader.