| L'Aiguillon-sur-Mer | |
| Commune: | L'Aiguillon-la-Presqu'île |
| Image Coat Of Arms: | Blason ville fr l'Aiguillon-sur-Mer (Vendée).svg |
| Arrondissement: | Fontenay-le-Comte |
| Canton: | Mareuil-sur-Lay-Dissais |
| Insee: | 85001 |
| Postal Code: | 85460 |
| Coordinates: | 46.33°N -1.3°W |
| Elevation M: | 6 |
| Elevation Min M: | 0 |
| Elevation Max M: | 8 |
| Area Km2: | 8.74 |
| Population: | 2050 |
| Population Date: | 2021 |
| Population Footnotes: | [1] |
L'Aiguillon-sur-Mer (in French pronounced as /lɛɡɥijɔ̃ syʁ mɛʁ/, literally L'Aiguillon on Sea) is a former commune in the Vendée department in western France. It was merged with La Faute-sur-Mer to form L'Aiguillon-la-Presqu'île on 1 January 2022.[2]
The river Lay forms all of the commune's northwestern border, then flows into the Atlantic Ocean, which forms all of its western border.