| Loir en Vallée | |
| Commune Status: | Commune |
| Arrondissement: | La Flèche |
| Canton: | Montval-sur-Loir |
| Insee: | 72262 |
| Postal Code: | 72310, 72340 |
| Mayor: | Galiène Cohu[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Loir-Lucé-Bercé |
| Coordinates: | 47.751°N 0.621°W |
| Area Km2: | 64.76 |
Loir en Vallée (pronounced as /fr/, literally Loir in Valley) is a commune in the department of Sarthe, northwestern France. The municipality was established on 1 January 2017 by merger of the former communes of Ruillé-sur-Loir (the seat), La Chapelle-Gaugain, Lavenay and Poncé-sur-le-Loir.[2]
Ruillé-sur-Loir was the first home to the Brothers of St. Joseph, now the Congregation of Holy Cross associated with the University of Notre Dame in the USA.[3]