The Diocese of Roseau (Latin: Dioecesis Rosensis) is a diocese of the Latin Church of the Catholic Church in the Caribbean. The diocese encompasses the entirety of the country of Dominica. The diocese is a suffragan of the Archdiocese of Castries, and a member of the Antilles Episcopal Conference.
The diocese of Roseau was erected in 1850. The territory was previously part of the former Vicariate Apostolic of Trinidad.
Bishops
Ordinaries
- Michael Monaghan (1851–1855)
- Désiré-Michel Vesque (1856–1858)
- René-Marie-Charles Poirier, C.I.M. (1858–1878)
- Michael Naughten (1879–1900)
- Philip Schelfhaut, C.Ss.R. (1902–1921)
- Giacomo Moris, C.Ss.R. (1922–1957)
- Arnold Boghaert, C.Ss.R. (1957–1993)
- Edward Joseph Gilbert, C.Ss.R. (1994–2001), appointed Archbishop of Port of Spain, Trinidad and Tobago
- Gabriel Malzaire (2002–2022)
- Kendrick Forbes (2024)
Coadjutor bishops
- Antoon Demets, C.SS.R. (1946–1954), did not succeed to see
- Arnold Boghaert, C.SS.R. (1956–1957)