Saint-Launeuc (French pronunciation: [sɛ̃ lonœk]; Breton: Sant-Laoueneg) is a former commune in the Côtes-d'Armor department of Brittany in northwestern France.

[2] The river Meu forms the commune's southern border.

The Rance forms the commune's northern border.

Inhabitants of Saint-Launeuc are called launeucois in French.

This Côtes-d'Armor geographical article is a stub.