Quaregna was a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 70 kilometres (43 mi) northeast of Turin and about 4 kilometres (2 mi) northwest of Biella.

As of 31 December 2004, it had a population of 1,325 and an area of 5.8 square kilometres (2.2 sq mi).

[1] As a comune Quaregna bordered the following municipalities: Cerreto Castello, Cossato, Piatto, Valdengo, Vallanzengo, Valle San Nicolao.

From 1 January 2019 Quaregna was absorbed by the new-born municipality of Quaregna Cerreto.

This article on a location in the Province of Biella is a stub.