Grono is a municipality in the Moesa Region in the Italian speaking part of the Swiss canton of Grisons. On 1 January 2017 the former municipalities of Leggia and Verdabbio merged into the municipality of Grono.

The Moesa Region is one of the eleven administrative districts in the Canton of the Grisons in Switzerland. It had an area of 473.74 square kilometers (182.91 sq mi) and a population of 8,770 .. It was created on 1 January 2017 as part of a reorganization of the Canton.