| Boullay-les-Troux | |
| Commune Status: | Commune |
| Coordinates: | 48.6782°N 2.0498°W |
| Insee: | 91093 |
| Postal Code: | 91470 |
| Arrondissement: | Palaiseau |
| Canton: | Gif-sur-Yvette |
| Intercommunality: | Pays de Limours |
| Mayor: | Hugues-Alexandre Rousseau[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 99 |
| Elevation Max M: | 177 |
| Area Km2: | 4.80 |
Boullay-lès-Troux (pronounced as /fr/) is a commune located thirty kilometers south-west of Paris in the department of Essonne in the Île-de-France region.[2]
Inhabitants of Boullay-les-Troux are known as Boullaisiens.