| Montigny-lès-Cormeilles | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Montigny-les-Cormeilles (Val-d'Oise).svg |
| Map Size: | 270px |
| Adjustable Map: | Montigny-les-Cormeilles_map.png |
| Map Caption: | Location (in red) within Paris inner and outer suburbs |
| Arrondissement: | Argenteuil |
| Canton: | Herblay-sur-Seine |
| Intercommunality: | CA Val Parisis |
| Mayor: | Jean-Noël Carpentier[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.9944°N 2.1958°W |
| Elevation Min M: | 61 |
| Elevation Max M: | 168 |
| Area Km2: | 4.07 |
| Insee: | 95424 |
| Postal Code: | 95370 |
Montigny-lès-Cormeilles (pronounced as /fr/, literally Montigny near Cormeilles) is a commune in Val d'Oise, in the northwestern suburbs of Paris, France. It is located 19km (12miles) from the center of Paris.
On 30 March 1922, a part of the territory of Montigny-lès-Cormeilles was detached and merged with a part of the territory of Taverny and a part of the territory of Pierrelaye to create the commune of Beauchamp.
Montigny-lès-Cormeilles is served by Montigny - Beauchamp station on Paris RER line C and on the Transilien Paris-Nord suburban rail line.
Montigny-lès-Cormeilles is also served by La Frette - Montigny station on the Transilien Paris-Saint-Lazare suburban rail line. This station, although administratively located on the territory of the neighboring commune of La Frette-sur-Seine, lies in fact very near the town center of Montigny-lès-Cormeilles.