| Lansac | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Lansac (Pyrénées-Orientales).svg |
| Arrondissement: | Prades |
| Canton: | La Vallée de l'Agly |
| Insee: | 66092 |
| Postal Code: | 66720 |
| Mayor: | Virginie Lee[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Agly Fenouillèdes |
| Coordinates: | 42.7667°N 2.5617°W |
| Elevation M: | 333 |
| Elevation Min M: | 218 |
| Elevation Max M: | 481 |
| Area Km2: | 5.20 |
Lansac (in French pronounced as /lɑ̃sak/; Occitan (post 1500);: Lançac) is a commune in the Pyrénées-Orientales department in southern France.
Lansac is located in the canton of La Vallée de l'Agly and in the arrondissement of Perpignan.