| Lanrivain | |
| Native Name: | Larruen |
| Commune Status: | Commune |
| Coordinates: | 48.3475°N -3.2128°W |
| Insee: | 22115 |
| Postal Code: | 22480 |
| Arrondissement: | Guingamp |
| Canton: | Rostrenen |
| Mayor: | Philippe Le Joncour[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Kreiz-Breizh |
| Elevation Min M: | 160 |
| Elevation Max M: | 281 |
| Area Km2: | 36.74 |
Lanrivain (in French pronounced as /lɑ̃ʁivɛ̃/; Breton: Larruen) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.
Inhabitants of Lanrivain are called lanrivanais in French.