Sagogn (Romansh pronunciation: [sɐˈɡɔɲ] ⓘ; German: Sagens) is a municipality in the Surselva Region in the canton of Graubünden in Switzerland.

Of the rest of the land, 4.7% is settled (buildings or roads) and the remainder (12.4%) is non-productive (rivers, glaciers or mountains).

[9] The age distribution, as of 2000[update], in Sagogn is; 60 children or 10.1% of the population are between 0 and 9 years old and 93 teenagers or 15.6% are between 10 and 19.

[4] The historical population is given in the following table:[3][9] The Church of S. Maria, and the prehistoric settlement, medieval castle and church at Schiedberg Castle/Bregl da Haida are listed as Swiss heritage sites of national significance.

The church has a three-bay nave with a rectangular choir and transept and two side chapels.

The castle served to protect the Lukmanier Pass trade route.

This church may have been a private chapel for the raetian Viktoriden family, who lived in a nearby manor house.

Valendas-Sagogn station, on the line of the Rhaetian Railway that links Chur and Disentis, lies some 120 metres (390 ft) below and 2.3 kilometres (1.4 mi) distant from the village of Sagogn.