Roman Catholic Diocese of Moosonee

History

• 3 December 1938: Established as the Apostolic Vicariate of Baie de James from the Diocese of Haileybury and Apostolic Vicariate of Northern Ontario.
• 13 July 1967: Elevated as the Diocese of Moosonee.
• 31 May 2007: Lost territory to the Roman Catholic Diocese of Amos.
• 3 December 2018: Officially suppressed and its territory united into the Roman Catholic Diocese of Hearst to create the Roman Catholic Diocese of Hearst–Moosonee.

  Diocesan bishops

• Henri Belleau, OMI
• Jules Leguerrier, OMI
• Vincent Cadieux, OMI
• *From 2007 to 2016, he served as Bishop of Hearst as well, an appointment that joined the two dioceses only through him, in persona episcopi, but did not create a single diocesan administration.
• Robert Bourgon