| Montesquieu | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Montesquieu (Lot-et-Garonne).svg |
| Arrondissement: | Nérac |
| Canton: | Lavardac |
| Insee: | 47186 |
| Postal Code: | 47130 |
| Mayor: | Alain Polo[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Albret Communauté |
| Coordinates: | 44.2025°N 0.4386°W |
| Elevation M: | 47 |
| Elevation Min M: | 30 |
| Elevation Max M: | 163 |
| Area Km2: | 25.53 |
Montesquieu (in French pronounced as /mɔ̃tɛskjø/; Lengadocian: Occitan (post 1500);: Montesquiu) is a commune in the department of Lot-et-Garonne and the region of Nouvelle-Aquitaine, southwestern France.