Arth is a village, a town, and a municipality in Schwyz District in the Canton of Schwyz in Switzerland .

The municipality consists of the villages Arth, Oberarth , and Goldau . The four settlements Rigi Kulm, Rigi First, Rigi Klösterli, and Rigi Staffel on the mountain Rigi to the west of Arth are also part of the municipality.

Arth is first mentioned in 1036 as Arta. In 1353 it was mentioned as ze Arth.

Arth has an area, as of 2006, of 42.1 km2 (16.3 sq mi).