| Saint-Gildas-des-Bois | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason-2 ville fr Saint-Gildas-des-Bois (Loire-Atlantique).svg |
| Arrondissement: | Saint-Nazaire |
| Canton: | Pontchâteau |
| Insee: | 44161 |
| Postal Code: | 44530 |
| Mayor: | Jean-François Legrand[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Pont-Château - Saint-Gildas-des-Bois |
| Coordinates: | 47.5172°N -2.0372°W |
| Elevation M: | 16 |
| Elevation Min M: | 1 |
| Elevation Max M: | 74 |
| Area Km2: | 33.42 |
Saint-Gildas-des-Bois (in French pronounced as /sɛ̃ ʒilda de bwa/; Breton: Gweltaz-Lambrizig) is a commune in the Loire-Atlantique department in western France.[2]