Andiast is a former municipality in the Surselva Region in the Swiss canton of Graubünden. Until 1943, it was known as Andest.

Lying close to the ski resorts of Waltensburg/Vuorz and Breil/Brigels , Andiast is known for its winter sports.

On 1 January 2018 the former municipalities of Andiast and Waltensburg/Vuorz merged into the municipality of Breil/Brigels.

The area around Andiast was already inhabited in the Stone Age, as was confirmed by an archaeological dig in 1962. The first mention of the area is documented in 765 in the will of a Bishop Tello when it was mentioned as Andeste.