| Lancrans | |
| Arrondissement: | Nantua |
| Canton: | Bellegarde-sur-Valserine |
| Insee: | 01205 |
| Postal Code: | 01200 |
| Commune: | Valserhône |
| Coordinates: | 46.125°N 5.8342°W |
| Elevation M: | 625 |
| Elevation Min M: | 350 |
| Elevation Max M: | 1606 |
| Area Km2: | 9.66 |
| Population: | 1054 |
| Population Date: | 2021 |
| Population Footnotes: | [1] |
Lancrans (in French pronounced as /lɑ̃kʁɑ̃/; Lancrens) is a former commune in the Ain department in the Auvergne-Rhône-Alpes region in Eastern France. On 1 January 2019, it was merged into the new commune of Valserhône.[2] In 1858, Vanchy (renamed Coupy in 1907, merged in 1966 into Bellegarde-sur-Valserine) and Confort separated from Lancrans to form new communes.
The town of Lancrans is located to the northeast of the Pertes de la Valserine, a small canyon where the Valserine runs partly underground. It used to mark the border with Bellegarde-sur-Valserine. It is similar to the former Perte du Rhône.