Mont Collon, Alpine peak in Valais, Switzerland

Mont Collon is a 3,637 m summit of the Swiss Pennine Alps in Valais, rising south of Arolla. Its glaciated north face dominates the view from the village. The mountain is flanked by the Collon Glacier to the west and the Haut Glacier d'Arolla to the east, which together form the Arolla Glacier. On the same ridge to the south stand the Mitre de l'Évêque (3,653 m) and l'Évêque (3,716 m), with the Petit Mont Collon (3,555 m) to the southwest.

Mont Collon's first recorded ascent was not in 1867 but on 31 July of that year, when Hans Baumann and Johann Kronig, with G. E. Foster, climbed the south-east face and south ridge. The west ridge, now the normal route, was first climbed on 3 August 1876 by A. Cust and Frederick Gardiner with guides Peter and Johannes Knubel of St. Niklaus. The north face was first opened on 13 August 1890 by Jean and Antoine Maître with John Hopkinson.

The mountain's name appears on maps and in climbing accounts alongside the Petit mont Collon (3,555 m) and the Mitre de l'Évêque (3,653 m), which share its south ridge. Climbers based at the Cabane des Vignettes (3,152 m) or the Refuge des Bouquetins (3,000 m) use these named summits to orient themselves on the ridge above Arolla.

Access to the mountain is possible from Arolla via established climbing routes, with mountain hut accommodation available partway. Visitors should come with mountaineering experience and plan their climb during favorable weather and early morning hours.

On 27 July 1970, Candide Pralong and Louis Favre climbed the north face by the Pralong-Favre route and descended the median ridge; the summit cap then held a 140 m vertical wall of ice, descended in four abseils.