| Saint-Launeuc | |
| Native Name: | Sant-Laoueneg |
| Commune Status: | Commune |
| Coordinates: | 48.2344°N -2.3744°W |
| Insee: | 22309 |
| Postal Code: | 22230 |
| Arrondissement: | Saint-Brieuc |
| Canton: | Broons |
| Mayor: | Marie-Thérèse Pithon[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 104 |
| Elevation Max M: | 159 |
| Area Km2: | 11.58 |
Saint-Launeuc (in French pronounced as /sɛ̃ lonœk/; Breton: Sant-Laoueneg) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.
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.