Crast' Agüzza, Alpine summit in Grisons, Switzerland.

Crast' Agüzza is a 3,870-metre summit on the Italian-Swiss border in the Bernina Range, its rocky east ridge rising between the Morteratsch Glacier to the north and the Upper Scerscen Glacier to the south. The Fuorcla Crast' Agüzza, a glacier pass at 3,581 metres, lies just to its north-west. Its name is Romansh, from the Puter idiom for "sharp edge".

The peak was first climbed on July 17, 1865, by Johann Jakob Weilenmann and three companions via the west ridge. This early ascent marks the beginning of modern mountaineering activity in this area of the Alps.

Locals call it the Engadin Matterhorn, and the name Crast' Agüzza comes from Puter Romansh, meaning "sharp edge"; it was earlier written Cresta güzza. The peak stands on the Italian-Swiss border above the Morteratsch and Upper Scerscen glaciers.

Reaching the summit requires serious mountaineering skills and experience on exposed terrain. The Marco e Rosa Hut at 3,597 meters (11,801 feet) provides shelter and supplies for those planning the climb.

The Fuorcla Crast' Agüzza, a 3,581-metre glacier pass immediately north-west of the peak, was first reached on 23 July 1861 by E. S. Kennedy and J. F. Hardy with guides Peter and F. Jenny and A. Flury. Collomb called it the most important glacier pass across the central Bernina Alps, comparable in position to the Col du Géant in the Mont Blanc range.