Klausen Pass (German: Klausenpass; elevation: 1,948 metres or 6,391 feet) is a high mountain pass in the Swiss Alps connecting Altdorf in the Canton of Uri with Linthal in the Canton of Glarus . Somewhat unusually, the boundary between the two cantons does not lie at the summit of the pass, but some 8 kilometres (5.0 mi) down the slope towards Linthal, with the summit being in Uri.

The Klausen Pass is crossed by a paved road, which has a length, between Altdorf and Linthal, of 46 kilometres (29 mi). The road approaches the summit from Altdorf via the Schächen Valley communities of Bürglen, Spiringen and Unterschächen , and descends to Linthal via the Urnerboden . The road is normally closed between October and May, due to the high snowfall on the pass. During the open period, a PostBus Switzerland service crosses the pass several times a day, connecting Fluelen station, on the Gotthard railway and Lake Lucerne , with Linthal station, the terminus of the railway line through Glarus.