Irving A. Kanarek (May 12, 1920 – September 2, 2020) was an American criminal defense attorney. He was best known for representing Charles Manson and "Onion Field" killer Jimmy Lee Smith. During the course of the trial he was jailed twice by Judge Older for contempt of court. In his summation, Bugliosi dubbed Kanarek "the Toscanini of Tedium."