| Saint-Thois | |
| Native Name: | Santoz |
| Commune Status: | Commune |
| Coordinates: | 48.1658°N -3.8833°W |
| Elevation Min M: | 28 |
| Elevation Max M: | 238 |
| Insee: | 29267 |
| Postal Code: | 29520 |
| Arrondissement: | Châteaulin |
| Canton: | Briec |
| Mayor: | Bernard Saliou[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Haute Cornouaille |
| Area Km2: | 18.10 |
Saint-Thois (in French pronounced as /sɛ̃ twa/; Breton: Santoz) is a commune in the Finistère department of Brittany in north-western France.
Inhabitants of Saint-Thois are called in French Saint-Thoisiens.