Inn District is a former administrative district in the canton of Graubünden, Switzerland. It had an area of 1196.77 km2 and had a population of 9,476 in 2015. It was replaced with the Engiadina Bassa/Val Müstair Region on 1 January 2017 as part of a reorganization of the Canton. It consisted of four Kreise (sub-districts) and seven municipalities:

Mergers and name changes

Languages

Along with Surselva, the district of Inn is predominantly Romansh-speaking, with a large German-speaking minority. Except for the municipality of Samnaun, all of the municipalities of the district has both Romansh and German as their language, although the latter has an unofficial status in most of the municipalities.