| Longues-sur-Mer | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Longues-sur-Mer 14.svg |
| Arrondissement: | Bayeux |
| Canton: | Bayeux |
| Insee: | 14377 |
| Postal Code: | 14400 |
| Mayor: | Roland Tirard[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 49.3367°N -0.6942°W |
| Elevation M: | 76 |
| Elevation Min M: | 0 |
| Elevation Max M: | 77 |
| Area Km2: | 12.29 |
Longues-sur-Mer (in French pronounced as /lɔ̃ɡ syʁ mɛʁ/) is a commune in the Calvados department in Normandie region in northwestern France.
The Longues-sur-Mer battery is nearby, part of the Atlantic Wall coastal fortifications.