| Saint-Ouen-l'Aumône | |
| Commune Status: | Commune |
| Coordinates: | 49.0447°N 2.1111°W |
| Map Size: | 270px |
| Arrondissement: | Pontoise |
| Image Coat Of Arms: | Blason de Saint-Ouen-l'Aumône.svg |
| Canton: | Saint-Ouen-l'Aumône |
| Intercommunality: | Cergy-Pontoise |
| Mayor: | Laurent Linquette[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 22 |
| Elevation Max M: | 58 |
| Area Km2: | 12.21 |
| Insee: | 95572 |
| Postal Code: | 95310 |
Saint-Ouen-l'Aumône (pronounced as /fr/) is a commune in the northwestern suburbs of Paris, France. It is located 27.6km (17.1miles) from the center of Paris, in the "new town" of Cergy-Pontoise, created in the 1960s.
Saint-Ouen-l'Aumône is served by two interchange stations on Paris RER C line and on the Transilien Paris-Nord suburban rail line: Saint-Ouen-l'Aumône-Liesse and Saint-Ouen-l'Aumône.
Saint-Ouen-l'Aumône is also served by two other stations on the Transilien Paris-Nord suburban rail line: Épluches and Pont-Petit.
Finally, Saint-Ouen-l'Aumône is also served by Saint-Ouen-l'Aumône-Quartier de l'Église station on the Transilien Paris-Saint-Lazare suburban rail line.
Schools in the commune include: