Selve Marcone was a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 70 km northeast of Turin and about 4 km northwest of Biella. As of 31 December 2004, it had a population of 100 and an area of 2.2 km2. From 1 January 2017 Selve Marcone was absorbed by the neighbouring municipality of Pettinengo. As an autonomous commune Selve Marcone bordered the following municipalities: Andorno Micca, Callabiana, Pettinengo, Piedicavallo, Rassa, Tavigliano.

Demographic evolution