Châtelaudren (French pronunciation: [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.

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