NANNETENSIS (Nantes - Loire-Atlantique)Probably existing in the fourth century.
NARBONENSIS (Narbonne - Aude)Created in the third century.
NEMAUSENSIS (Nîmes - Gard)Mentioned in 396.
NICIENSIS (Nice - Alpes-Maritime)Created at the beginning of the fourth century. Joined with the See of Cimiez in the fifth century and transferred to the See of Nice in the twelfth century.
NIVERNENSIS (Nevers - Ničvre)Created in the sixth century.
NOVIOMENCIS (Noyon - Oise)Created in the sixth century, but joined with Tournai. Became an independent diocese in 1146.