Cogne (French: [kɔɲ] ⓘ, Italian: [ˈkɔɲɲe];[3] Issime Walser: Kunji) is a town and comune (municipality) in Aosta Valley, northern Italy, with 1369 inhabitants, as of 2017.

Prés de Saint-Ours), is located at the southern edge of the town center (webcam); the municipal statute forbids any construction works on this meadow, which has received recognition as a "Wonder of Italy".

The main mineral veins were exploited in the mines of Colonne, Licony e Larsinaz.

The ore (mainly magnetite) was transported for processing to the Cogne steel plant in Aosta using a narrow gauge railway.

Recent natural disasters that have hit the region include the flood of 1993 and that of October 15, 2000, when more than 400 millimetres (16 in) of rain fell in two days, causing inundations and landslides.