Paris - Île-de-France
- Nouioui
- Nouisser
- Nourdine
- Nourrisson
- Noutary
- Nouvian
- Novakovic
- Nowacki
- Noyal
- Nozick
- Noziere
- Nozieres
- Ntamack
- Ntambwe
- Ntsama
- Nuel
- Nugier
- Numata
- Nur
- Nurul
- Nusbaumer
- Nuttall
- Nyame
- Nzoumba
- Nègre
- O Leary
- O Neil
- O Neill
- O Quin
- Obala
- Obe
- Obedia
- Obeniche
- Oberg
- Oberto
- Objois
- Oble
- Oblin
- Oboeuf
- Obringer
- Obriot
- Occelli
- Occolier
- Oda
- Odie
- Odillard
- Odiot
- Odonnat
- Odouard
- Offenstadt
- Offner
- Ofman
- Oguz
- Ohler
- Ohlson
- Oiffer
- Oiknin
- Ojalvo
- Ok
- Oktay
- Okuno
- Olariu
- Olhagaray
- Olivar
- Oliveira Martins
- Oliveras
- Olivo
- Olivon
- Olsen
- Oltra
- Oltramare
- Olympie
- Omara
- Omasson
- Omrane
- Oms
- Onestas
- Opigez
- Oquet
- Oranger
- Orban
- Ordioni
- Ordner
- Ordonneau
- Ore
- Oreal
- Orenga de Gaffory
- Orenstein
- Orhan
- Oria
- Origny
- Orillard
- Orinel
- Orliaguet
- Orlik
- Oros
- Orsel Des Sagets
- Orsi
- Ortlieb
- Ortola