| Châtelaudren | |
| Native Name: | (Gallo) |
| Image Coat Of Arms: | Blason Châtelaudren.svg |
| Coordinates: | 48.5428°N -2.9697°W |
| Insee: | 22038 |
| Postal Code: | 22170 |
| Arrondissement: | Guingamp |
| Canton: | Plélo |
| Commune: | Châtelaudren-Plouagat |
| Elevation Min M: | 9 |
| Elevation Max M: | 133 |
| Area Km2: | 0.46 |
| Population: | 1010 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Châtelaudren (in French pronounced as /ʃatɛlodʁɛ̃/; Breton: Kastellaodren; Gallo: Le Chastèu) is a former commune in the Côtes-d'Armor department of Brittany in northwestern France. On 1 January 2019, it was merged into the new commune Châtelaudren-Plouagat.[2]
Inhabitants of Châtelaudren are called Châtelaudrinais in French.