| Allainville | |
| Commune Status: | Commune |
| Arrondissement: | Rambouillet |
| Canton: | Rambouillet |
| Insee: | 78009 |
| Postal Code: | 78660 |
| Mayor: | Gilles Quinton[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Rambouillet Territoires |
| Coordinates: | 48.45°N 1.89°W |
| Elevation M: | 154 |
| Elevation Min M: | 145 |
| Elevation Max M: | 159 |
| Area Km2: | 16.30 |
Allainville (pronounced as /fr/) is a commune in the Yvelines department in north-central France.