Castelnau
Castelnau may refer to:
Places
France
Castelnau or Castelnaud (castel 'castle' and nau 'new' in Occitan) is part of the name of several communes in the south of France:
- Castelnau-Barbarens, in the Gers département
 - Castelnau-Chalosse, in the Landes département
 - Castelnau-d'Anglès, in the Gers département
 - Castelnau-d'Arbieu, in the Gers département
 - Castelnau-d'Aude, in the Aude département
 - Castelnau-d'Auzan, in the Gers département
 - Castelnau-d'Estrétefonds, in the Haute-Garonne département
 - Castelnau-de-Brassac, in the Tarn département
 - Castelnau-de-Guers, in the Hérault département
 - Castelnau-de-Lévis, in the Tarn département
 - Castelnau-de-Mandailles, in the Aveyron département
 - Castelnau-de-Médoc, in the Gironde département
 - Castelnau-de-Montmiral, in the Tarn département
 - Castelnau-Durban, in the Ariège département
 - Castelnau-le-Lez, in the Hérault département
 - Castelnau-Magnoac, in the Hautes-Pyrénées département
 - Castelnau-Montratier, commune in the Lot département
 - Castelnau-Montratier (delegated commune), delegated commune in the Lot département
 - Castelnau-Pégayrols, in the Aveyron département
 - Castelnau-Picampeau, in the Haute-Garonne département
 - Castelnau-Rivière-Basse, in the Hautes-Pyrénées département
 - Castelnau-sur-Gupie, in the Lot-et-Garonne département
 - Castelnau-sur-l'Auvignon, in the Gers département
 - Castelnau-Tursan, in the Landes département
 - Castelnau-Valence, in the Gard département
 - Castelnaud-de-Gratecambe, in the Lot-et-Garonne département
 - Castelnaud-la-Chapelle, in the Dordogne département
 - Saint-Michel-de-Castelnau, in the Gironde département
 
England
- Castelnau, London, an estate and road in Barnes, south-west London
 
Canada
- De Castelnau station, a Montreal Metro station in the Villeray–Saint-Michel–Parc-Extension borough
 - Castelnau Lake, a freshwater body of the catchment area of the rivière à la Chasse in Baie-Comeau, Quebec
 
People
- Michel de Castelnau, sieur de la Mauvissière (c. 1520–1592), French diplomat and soldier
 - Emmanuel Boileau de Castelnau (1857-1923), French mountain climber
 - François-Louis Laporte, comte de Castelnau (1810–1880), French naturalist
 - Noël Édouard, vicomte de Curières de Castelnau (1851–1944), French general
 
See also
- Château de Castelnau-Bretenoux, a castle in the commune of Prudhomat, Lot département, France
 - Châteauneuf (disambiguation)
 - Neufchâtel (disambiguation)
 - Neuchâtel
 - Newcastle (disambiguation)
 - Neuburg (disambiguation)