Founded as the diocese of Louisiana and the Two Floridas on 25 April 1793. Name changed to the diocese of New Orleans on 18 July 1826. Elevated to an archdiocese on 19 July 1850. Suffragan dioceses include
See also
- Alexandria, Louisiana
- Baton Rouge, Louisiana
- Houma-Thibodaux, Louisiana
- Lafayette, Louisiana
- Lake Charles, Louisiana
- Shreveport, Louisiana
New Catholic Dictionary