| Montgaillard-en-Albret | |
| Commune Status: | Commune |
| Arrondissement: | Nérac |
| Canton: | Lavardac |
| Insee: | 47176 |
| Postal Code: | 47230 |
| Mayor: | Henri de Colombel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Albret Communauté |
| Coordinates: | 44.2081°N 0.2942°W |
| Elevation M: | 200 |
| Elevation Min M: | 50 |
| Elevation Max M: | 163 |
| Area Km2: | 8.53 |
Montgaillard-en-Albret (in French pronounced as /mɔ̃ɡajaʁ/; Occitan (post 1500);: Montgalhard; before 2022: Mongaillard) is a commune in the Lot-et-Garonne department in south-western France.