The Diocese of Rouyn-Noranda (Latin: Dioecesis Ruynensis-Norandensis) is a Latin Church diocese that includes part of the Province of Quebec in the Gatineau ecclesiastical province.

After the retirement of Bishop Dorylas Moreau in 2019, Bishop Gilles Lemay of the Diocese of Amos, another suffragan in the eccleastical province of Gatineau, became the Apostolic Administrator of the Diocese until the current bishop, Joseph Ferdinand Guy Boulanger, was installed on March 21, 2020.

In September of 2023, Pope Francis appointed Bishop Guy Boulanger as Bishop of Amos, uniting the two dioceses – Rouyn-Noranda and Amos – in persona episcopi.

The following is a list of the bishops of Rouyn-Noranda and their terms of service:

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