Lumnezia is a valley region and a municipality in the Surselva Region in the Swiss of canton of the Grisons . The former municipalities of Cumbel , Degen, Lumbrein , Morissen , Suraua, Vignogn, Vella, and Vrin merged on 1 January 2013 into the new municipality of Lumnezia. It covers the Val Lumnezia (German: Lugnez), a Swiss high alpine valley. Its upper regions are among the most remote areas in the Swiss Alps . The official language is Romansh.

In 1998, the village of Vrin was awarded the Wakker Prize for the preservation of its architectural heritage.