| Castelnau-d'Auzan-Labarrère | |
| Commune Status: | Commune |
| Arrondissement: | Condom |
| Canton: | Armagnac-Ténarèze |
| Insee: | 32079 |
| Postal Code: | 32250, 32440 |
| Mayor: | Philippe Beyries[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.949°N 0.085°W |
| Area Km2: | 56.78 |
Castelnau-d'Auzan-Labarrère (pronounced as /fr/; oc|Castèthnau d'Eusan e La Barrèra) is a commune in the Gers department of southwestern France. The municipality was established on 1 January 2016 and consists of the former communes of Castelnau-d'Auzan and Labarrère.[2]
The population data given in the table and graph below for 2012 and earlier refer to the former communes of Castelnau-d'Auzan and Labarrère combined.