Renaico (Spanish pronunciation: [reˈnajko]) is a city and commune forming part of the Malleco Province in the Araucanía Region in southern Chile.

According to the 2002 census of the National Statistics Institute, Renaico spans an area of 267.4 km2 (103 sq mi) and has 9,128 inhabitants (4,508 men and 4,620 women).

[3] As a commune, Renaico 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, Renaico is represented in the Chamber of Deputies by Gonzalo Arenas (UDI) and Mario Venegas (PDC) as part of the 48th electoral district, together with Angol, Collipulli, Ercilla, Los Sauces, Purén, Lumaco and Traiguén.

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).