La Roche-Derrien (; ) 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 La Roche-Jaudy.Arrêté préfectoral 29 October 2018
Population Inhabitants of La Roche-Derrien are called rochois in French.
See also Communes of the Côtes-d'Armor department
References
External links
Official website