Perquenco is a town and commune in the Cautín Province of southern Chile's Araucanía Region.

According to the 2002 census of the National Statistics Institute, Perquenco spans an area of 330.7 km2 (128 sq mi) and has 6,450 inhabitants (3,281 men and 3,169 women).

[3] As a commune, Perquenco is a third-level administrative division of Chile administered by a municipal council, headed by an alcalde who is directly elected every four years.

[1][2] Within the electoral divisions of Chile, Perquenco is represented in the Chamber of Deputies by Enrique Estay (UDI) and Fuad Chahín (PDC) as part of the 49th electoral district, together with Victoria, Curacautín, Lonquimay, Melipeuco, Vilcún, Lautaro and Galvarino.

The commune is represented in the Senate by Alberto Espina Otero (RN) and Jaime Quintana Leal (PPD) as part of the 14th senatorial constituency (Araucanía-North).