| Boën-sur-Lignon | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Boën 42.svg |
| Arrondissement: | Montbrison |
| Canton: | Boën-sur-Lignon |
| Insee: | 42019 |
| Postal Code: | 42130 |
| Mayor: | Anne Jouanjan[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | CA Loire Forez |
| Coordinates: | 45.7464°N 4.005°W |
| Elevation Min M: | 374 |
| Elevation Max M: | 557 |
| Area Km2: | 6 |
Boën-sur-Lignon (in French pronounced as /bwɛ̃ syʁ liɲɔ̃/, literally Boën on Lignon), formerly Boën,[2] is a commune in the Loire department in central France.
The river Lignon du Forez flows through the commune.