| Lanvaudan | |
| Native Name: | Lanvodan |
| Commune Status: | Commune |
| Coordinates: | 47.9003°N -3.2603°W |
| Insee: | 56104 |
| Postal Code: | 56240 |
| Arrondissement: | Lorient |
| Canton: | Guidel |
| Mayor: | Dominique Eliot[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | Lorient Agglomération |
| Elevation Min M: | 19 |
| Elevation Max M: | 158 |
| Area Km2: | 18.30 |
Lanvaudan (in French pronounced as /lɑ̃vodɑ̃/;) is a commune in the Morbihan department of Brittany in north-western France.[2] Inhabitants of Lanvaudan are called in French Lanvaudanais.