| Saint-Avit-Saint-Nazaire | |
| Commune Status: | Commune |
| Arrondissement: | Libourne |
| Canton: | Le Réolais et Les Bastides |
| Insee: | 33378 |
| Postal Code: | 33220 |
| Mayor: | Laurent Fritsch[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays Foyen |
| Coordinates: | 44.8514°N 0.2583°W |
| Elevation M: | 27 |
| Elevation Min M: | 6 |
| Elevation Max M: | 38 |
| Area Km2: | 18.61 |
Saint-Avit-Saint-Nazaire (in French pronounced as /sɛ̃.t‿avi sɛ̃ nazɛʁ/; Occitan (post 1500);: Sent Avit e Sent Nazari) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.