| Lamontjoie | |
| Commune Status: | Commune |
| Arrondissement: | Nérac |
| Canton: | L'Albret |
| Insee: | 47133 |
| Postal Code: | 47310 |
| Mayor: | Pascal Boutan[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 44.0761°N 0.5217°W |
| Elevation M: | 120 |
| Elevation Min M: | 87 |
| Elevation Max M: | 201 |
| Area Km2: | 17.75 |
Lamontjoie (in French pronounced as /lamɔ̃ʒwa/；Occitan (post 1500);: La Montjòia) is a commune in the Lot-et-Garonne department in south-western France.