| Saint-Thélo | |
| Native Name: | Sant-Teliav |
| Commune Status: | Commune |
| Coordinates: | 48.2292°N -2.8528°W |
| Insee: | 22330 |
| Postal Code: | 22460 |
| Arrondissement: | Saint-Brieuc |
| Canton: | Guerlédan |
| Mayor: | Anne-Laure Duedal[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | Loudéac Communauté - Bretagne Centre |
| Elevation Min M: | 97 |
| Elevation Max M: | 227 |
| Area Km2: | 14.56 |
Saint-Thélo (in French pronounced as /sɛ̃ telo/;) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.
Inhabitants of Saint-Thélo are called thélossiens in French.