Rothenbrunnen (Romansh: Giuvaulta) is a municipality in the Viamala Region in the Swiss canton of Graubünden.

Of the rest of the land, 9.4% is settled (buildings or roads) and the remainder (11.3%) is non-productive (rivers, glaciers or mountains).

[4] Before 2017, the municipality was located in the Domleschg sub-district, of the Hinterrhein district, after 2017 it was part of the Viamala Region.

The municipality's coat of arms is Argent a Fountain proper Gules and in Chief Azure a Mullet Or.

The coat of arms of the friie was: D'azur à l'étoile de cinq / six pointes d'argent / or.

[4] The ruins of Hochjuvalt Castle are listed as a Swiss heritage sites of national significance.

The wettest month is August during which time Rothenbrunnen receives an average of 105 mm (4.1 in) of precipitation.

The driest month of the year is February with an average of 45 mm (1.8 in) of precipitation over 10.9 days.