Castelnau-d'Auzan (French pronunciation: [kastɛlno dozan]; Gascon: Castèthnau d'Eusan) is a former commune in the Gers department in southwestern France.

[2] A picturesque little village on the river Gélise on a crossing of roads, 26 km (16 mi) east of the city of Condom in the Gers bounding the departments Lot-et-Garonne and the Landes.

Due to the changes in the rural economics the last decade agricultural land and farms were put on the market and sold to newcomers from the north of Europe, looking for an active countryside way of life.

Close to the "place de la Mairie" with the pretty town hall you will find the oldest street of Castelnau the "rue du Canon".

The leisure area offers during the summer holidays the children collective and individual games, trips in to the nature and theme days.

The leisure area offers a wide range of amusement in a splendid green neighbourhood with swimming pool, children's pool and game zone, two tennis courts, a beach volleyball court, a fitness circuit, a fishing lake of 3 hectares, pick-nick places and perfect walking and bicycle routes.

With measure it also nice to consume a glass Armagnac, a good cassoulet, a typical confit de canard or a small piece of foie gras.