Col des Mosses (elevation 1445 m) is a mountain pass in the western Bernese Alps of Switzerland. The pass is located in the municipality of Ormont-Dessous in the canton of Vaud . It links Aigle , to the south in the valley of the Rhone, with Château-d'Œx , to the north in the valley of the Sarine, and is flanked to the west by the Mont d'Or and to the east by the Pic Chaussy .

The pass is traversed by a major road between Aigle and Château-d'Œx. From Aigle, the road ascends 1,028 metres (3,373 ft) over a distance of 18.8 kilometres (11.7 mi), whilst from Château-d'Œx it ascends 521 metres (1,709 ft) over 14 kilometres (8.7 mi). The road is normally kept open throughout the year.