| Niaux | |
| Commune Status: | Commune |
| Arrondissement: | Foix |
| Canton: | Sabarthès |
| Insee: | 09217 |
| Postal Code: | 09400 |
| Mayor: | Jean Idarreta[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Tarascon |
| Coordinates: | 42.8142°N 1.5919°W |
| Elevation M: | 546 |
| Elevation Min M: | 509 |
| Elevation Max M: | 1322 |
| Area Km2: | 3.99 |
Niaux is a commune in the Ariège department in southwestern France.
Located on the right banks of the Vicdessos river, Niaux is the site of the Cave of Niaux, which is famous for its prehistoric cave paintings of bison and horses from the Magdalenian era.[2]
Inhabitants are called Niauxéens.