The Diocese of Chalan Kanoa (Latin: Diœcesis Vialembensis) is a diocese of the Catholic Church in the United States. It comprises the territory of the Commonwealth of the Northern Mariana Islands and is a suffragan of the Metropolitan Archdiocese of Agaña. The diocese was canonically erected in 1984; the mother church, the Our Lady of Mount Carmel Cathedral, is on Saipan.
Bishops
- Tomas Aguon Camacho (1984–2010)
- Ryan Pagente Jimenez (Apostolic Administrator: 2010–2016) (Bishop: 2016–2024)
- Romeo Duetao Convocar (2025-present)