Bionaz

 
Bionaz (Valdôtain: ; from 1939 to 1946) is a "comune sparso" which extends over of the North-Eastern Valpelline area of the Aosta Valley region of northwest Italy. The commune lies on the left side of the river Dora Baltea. The population of about 240 is dispersed among 20 or more small alpine villages and hamlets including "Plan-de-Veyne", which is the main centre and the "capoluogo" (locally and officially also "chef-lieu", in French). The commune belongs to the "Unité des communes valdôtaines du Grand-Combin".
Villages, hamlets and other centres.
The commune's statute designates the following "frazioni" (locally officially called "hameaux", in French):
The following localities, villages and other places not formally designated as "frazioni", are also listed in the bulletin:
Mountain huts.
Within the boundaries of the commune there are also three mountain huts: