The Wetterhorn (Swiss Standard German pronunciation: [ˈvɛtərˌhɔrn]; 3,690 m) is a peak in the Swiss Alps towering above the village of Grindelwald . Formerly known as Hasle Jungfrau , it is one of three summits on a mountain named the "Wetterhörner", the highest of which is the Mittelhorn (3,702 m) and the lowest and most distant the Rosenhorn (3,689 m). The latter peaks are mostly hidden from view from Grindelwald.

The Grosse Scheidegg Pass crosses the col to the north, between the Wetterhorn and the Schwarzhorn.

The Wetterhorn summit was first reached on August 31, 1844, by the Grindelwald guides Hans Jaun and Melchior Bannholzer, three days after they had co-guided a large party organized by the geologist Édouard Desor to the first ascent of the Rosenhorn. The Mittelhorn was first summitted on 9 July 1845 by the same guides, this time accompanied by a third, Kaspar Abplanalp, and by British climber Stanhope Templeman Speer.