| Pierrelaye | |
| Commune Status: | Commune |
| Coordinates: | 49.0233°N 2.1508°W |
| Arrondissement: | Argenteuil |
| Canton: | Taverny |
| Intercommunality: | CA Val Parisis |
| Mayor: | Michel Vallade[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 35 |
| Elevation Max M: | 78 |
| Area Km2: | 9.21 |
| Insee: | 95488 |
| Postal Code: | 95480 |
Pierrelaye (pronounced as /fr/) is a commune in the Val-d'Oise department in Île-de-France in northern France. Pierrelaye station has rail connections to Pontoise and Paris.