The Roman Catholic Diocese of Moosonee (Latin: Dioecesis Musonitana) was a Roman Catholic diocese that included part of the Province of Ontario.

As of 2016, the diocese contained 12 parishes with no active diocesan priests, 3 religious priests, and 7,450 Catholics.

[1] The following is a list of the Vicars apostolic and bishops of Moosonee and their terms of service:

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