Rancio Valcuvia is a comune (municipality) in the Province of Varese in the Italian region Lombardy, located about 60 km northwest of Milan and about 11 km northwest of Varese. Rancio Valcuvia borders the following municipalities: Bedero Valcuvia, Brinzio, Cassano Valcuvia, Castello Cabiaglio, Cuveglio, Ferrera di Varese, Masciago Primo. In terms of industry, the Torcitura di Rancio, a textile transformation industry, was formed as a joint venture between Montefibre, interested in the transformation of its yarns, and the Ratti group, interested in textile machinery aspects. The former twisting plant was then acquired by the Cumdi company of Germignaga.