| Roaillan | |
| Commune Status: | Commune |
| Arrondissement: | Langon |
| Canton: | Le Sud-Gironde |
| Insee: | 33357 |
| Postal Code: | 33210 |
| Mayor: | Jean-François Tauzin[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 44.4997°N -0.2808°W |
| Elevation Min M: | 17 |
| Elevation Max M: | 106 |
| Area Km2: | 11.48 |
Roaillan (in French pronounced as /ʁɔajɑ̃/; Occitan (post 1500);: Roalhan) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.