| Madaillan | |
| Commune Status: | Commune |
| Arrondissement: | Agen |
| Canton: | Le Confluent |
| Insee: | 47155 |
| Postal Code: | 47360 |
| Mayor: | Philippe Darquiès[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Confluent et Coteaux de Prayssas |
| Coordinates: | 44.2778°N 0.5747°W |
| Elevation M: | 158 |
| Elevation Min M: | 61 |
| Elevation Max M: | 225 |
| Area Km2: | 24.39 |
Madaillan (in French pronounced as /madajɑ̃/; Occitan (post 1500);: Madalhan) is a commune in the Lot-et-Garonne department in south-western France.