The Bütlasse (3,193 m or 10,476 ft) is a mountain of the Bernese Alps, located north of the Gspaltenhorn in the canton of Bern. The Vorderi Bütlasse (3,063 m or 10,049 ft) is a minor summit situated north of the Bütlasse. The closest localities are Griesalp (Kiental) and Gimmelwald (Lauterbrunnen). The Sefinenfurgge Pass, traversed by a hiking trail between Griesalp and Lauterbrunnen, passes to the north of Bütlasse.