| Fossès-et-Baleyssac | |
| Commune Status: | Commune |
| Arrondissement: | Langon |
| Canton: | Le Réolais et Les Bastides |
| Insee: | 33171 |
| Postal Code: | 33190 |
| Mayor: | Alain Doux[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Réolais en Sud Gironde |
| Coordinates: | 44.595°N 0.0428°W |
| Elevation M: | 84 |
| Elevation Min M: | 33 |
| Elevation Max M: | 113 |
| Area Km2: | 9.4 |
Fossès-et-Baleyssac is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.