| La Chapelle-Janson | |
| Native Name: | Chapel-Yent |
| Commune: | La Chapelle-Fleurigné |
| Coordinates: | 48.3483°N -1.1008°W |
| Insee: | 35062 |
| Postal Code: | 35133 |
| Arrondissement: | Fougères-Vitré |
| Canton: | Fougères-2 |
| Elevation Min M: | 79 |
| Elevation Max M: | 249 |
| Area Km2: | 26.96 |
| Population: | 1492 |
| Population Date: | 2021 |
| Population Footnotes: | [1] |
La Chapelle-Janson (pronounced as /fr/; br|Chapel-Yent; Gallo: La Chapèll-Janczon) is a former commune in the Ille-et-Vilaine department of Brittany in north-western France. It was merged with Fleurigné to form La Chapelle-Fleurigné on 1 January 2024.[2]
Inhabitants of La Chapelle-Janson are called Jansonnais in French.