| Le Mas-d'Agenais | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Le Mas-d'Agenais (Lot-et-Garonne).svg |
| Arrondissement: | Marmande |
| Canton: | Les Forêts de Gascogne |
| Insee: | 47159 |
| Postal Code: | 47430 |
| Mayor: | Claude Lagarde[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val de Garonne Agglomération |
| Coordinates: | 44.4117°N 0.2181°W |
| Elevation M: | 45 |
| Elevation Min M: | 17 |
| Elevation Max M: | 120 |
| Area Km2: | 21.18 |
| Demonym: | Massais, Massaises |
Le Mas-d'Agenais (in French pronounced as /lə mas daʒ(ə)nɛ/, literally Le Mas of Agenais; Occitan (post 1500);: Lo Mas d'Agenés) is a commune in the Lot-et-Garonne department in south-western France.