Surselva Region is one of the eleven administrative districts in the canton of Graubünden in Switzerland. It was created on 1 January 2017 as part of a reorganization of the canton.

Obersaxen Mundaun is a municipality in the Surselva Region in the Swiss canton of the Grisons. On 1 January 2016 the former municipalities of Obersaxen and Mundaun merged to form the new municipality