| Beaulieu-sur-Oudon | |
| Commune Status: | Commune |
| Arrondissement: | Laval |
| Canton: | Loiron-Ruillé |
| Intercommunality: | Laval Agglomération |
| Mayor: | Anthony Roullier[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.005°N -0.9925°W |
| Elevation M: | 100 |
| Elevation Min M: | 67 |
| Elevation Max M: | 140 |
| Area Km2: | 19.73 |
| Insee: | 53026 |
| Postal Code: | 53320 |
Beaulieu-sur-Oudon (in French pronounced as /boljø syʁ udɔ̃/, literally Beaulieu on Oudon) is a commune in the Mayenne department in northwestern France.
The river Oudon flows through the commune and forms part of its southeastern border.