| Subject Name: | Buix |
| Municipality Type: | former |
| Canton: | Jura |
| Iso-Code-Region: | CH-JU |
| Coordinates: | 47.4833°N 9°W |
| Postal Code: | 2925 |
| Municipality Code: | 6777 |
| Area: | 8.23 |
| Elevation: | 383 |
| Population: | 476 |
| Populationof: | 2003 |
| Website: | www.buix.ch |
| Mayor: | Thierry Crétin |
| Neighboring Municipalities: | Montignez, Courtemaîche, Bure, Boncourt, Villars-le-Sec (F), Courcelles (F) |
Buix is a former municipality in the district of Porrentruy in the canton of Jura in Switzerland. On 1 January 2009 the former municipalities of Buix, Courtemaîche and Montignez merged to form the new municipality of Basse-Allaine.[1]
The village is situated in a small valley in the middle of which runs the river Allaine.