| Loiron | |
| Image Coat Of Arms: | Blason Loiron.svg |
| Arrondissement: | Laval |
| Canton: | Loiron |
| Commune: | Loiron-Ruillé |
| Coordinates: | 48.06°N -0.9339°W |
| Elevation M: | 140 |
| Elevation Min M: | 88 |
| Elevation Max M: | 172 |
| Area Km2: | 22.92 |
| Population: | 1740 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
| Insee: | 53137 |
| Postal Code: | 53320 |
Loiron (in French pronounced as /lwaʁɔ̃/) is a former commune in the Mayenne department in north-western France. On 1 January 2016, it was merged into the new commune of Loiron-Ruillé.[2]