La Roche-Jaudy is a commune in the Côtes-d'Armor department of Brittany in northwestern France. It was established on 1 January 2019 by the merger of the former communes of La Roche-Derrien, Hengoat,

In the administrative divisions of France, the department is one of the three levels of government under the national level, between the administrative regions and the communes. There are a total of 1