The Parpaner Weisshorn (2824 m) is a mountain in the Plessural Alps in the canton of Graubünden in Switzerland.
The west-east, rocky summit ridge lies between the communities Tschiertschen-Praden in the north and Arosa in the south. The ridge, which offers an interesting view of the Urdensee, merges into the Tschirpen at its eastern end and from there into the Hörnligrat. Vaz / Obervaz also has a share in the 2776 m high western summit.
The north ridge that goes out from there falls to Urdenfürggli, the corresponding south ridge to Gredigs Fürggli. The foot of the Parpaner Weisshorn is accessible from these crossings and from the Älplisee through mountain hiking trails (grade T2). Other neighboring peaks are the Älplihorn, the Parpaner Rothorn and the Parpaner Schwarzhorn. Geologically, the Parpaner Weisshorn is part of the Tschirpen blanket, which is very similar to the neighboring Arosa Dolomite blanket.