| Saint-Fiacre | |
| Native Name: | Sant-Fieg |
| Commune Status: | Commune |
| Coordinates: | 48.4617°N -3.0594°W |
| Insee: | 22289 |
| Postal Code: | 22720 |
| Arrondissement: | Guingamp |
| Canton: | Plélo |
| Mayor: | Gilbert Le Bihan[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 114 |
| Elevation Max M: | 228 |
| Area Km2: | 9.70 |
Saint-Fiacre (in French pronounced as /sɛ̃ fjakʁ/;) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.