| Saint-Jean-Kerdaniel | |
| Native Name: | Sant-Yann-Gerdaniel |
| Commune Status: | Commune |
| Coordinates: | 48.5658°N -3.02°W |
| Insee: | 22304 |
| Postal Code: | 22170 |
| Arrondissement: | Guingamp |
| Canton: | Plélo |
| Mayor: | Jean-Baptiste Le Verre[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 102 |
| Elevation Max M: | 174 |
| Area Km2: | 11.12 |
Saint-Jean-Kerdaniel (in French pronounced as /sɛ̃ ʒɑ̃ kɛʁdanjɛl/;) is a commune in the Côtes-d'Armor département of Brittany in northwestern France.
Inhabitants of Saint-Jean-Kerdaniel are called kerdanielais in French.