The Diocese of Hearst was erected as the Prefecture Apostolic of Northern Ontario on April 18, 1919. On November 17, 1920, it was elevated to the Vicariate Apostolic and on December 3, 1938 it was erected as the Diocese of Hearst.
  • Website of the Diocese of Hearst

  • Most Rev. Vincent Cadieux, O.M.I.
    Bishop of Hearst
    P.O. Box 1330
    Hearst, Ontario P0L 1N0
    Phone: (705) 362-4903
    Fax: (705) 362-4421