Roman Catholic Diocese of Saint John, New Brunswick

The Roman Catholic Diocese of Saint John, New Brunswick (Dioecesis Sancti Ioannis Canadensis) (erected 30 September 1842, as the Diocese of Saint John in America) is a suffragan of the Archdiocese of Moncton. It was renamed on 15 November 1924.

Ordinaries

 * William Dollard (1842–1851)
 * Thomas Louis Connolly, O.F.M.Cap. (1852–1859), appointed Archbishop of Halifax, Nova Scotia
 * John Sweeny (1859–1901)
 * Timothy Casey (1901–1912), appointed Archbishop of Vancouver, British Columbia
 * Edward Alfred Le Blanc (1912–1935)
 * Patrick Albert Bray, C.I.M. (1936–1953)
 * Alfred Bertram Leverman (1953–1968)
 * Joseph Neil MacNeil (1969–1973), appointed Archbishop of Edmonton, Alberta
 * Arthur Joseph Gilbert (1974–1986)
 * Joseph Edward Troy (1986–1997)
 * Joseph Faber MacDonald, C.S.C. (1998–2006)
 * Martin William Currie (2006–2007)
 * Robert Harris (2007–2019)
 * Christian Riesbeck, CC (2019-)

Coadjutor bishops

 * Timothy Casey (1899–1901)
 * Joseph Edward Troy (1984–1986)

Other priest of this diocese who became bishop

 * William Mark Duke, appointed Coadjutor Archbishop of Vancouver, British Columbia in 1928