| Villemoustaussou | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Villemoustaussou (Aude).svg |
| Arrondissement: | Carcassonne |
| Canton: | La Vallée de l'Orbiel |
| Insee: | 11429 |
| Postal Code: | 11620 |
| Mayor: | Bruno Giacomel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Carcassonne Agglo |
| Coordinates: | 43.2531°N 2.3653°W |
| Elevation M: | 108 |
| Elevation Min M: | 84 |
| Elevation Max M: | 180 |
| Area Km2: | 11.94 |
Villemoustaussou (in French pronounced as /vilmustosu/; Languedocien: Vilamostausson) is a commune in the Aude department in southern France.
The inhabitants of the commune are known as Villemachois in French.