Pelarco is a town and commune in Talca Province, Maule Region of Chile.

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

The 2008-2012 alcalde is Alfredo Pérez Leiva (Ind.).

[1] Within the electoral divisions of Chile, Pelarco is represented in the Chamber of Deputies by Pablo Lorenzini (PDC) and Pedro Pablo Alvarez-Salamanca (UDI) as part of the 38th electoral district, together with Curepto, Constitución, Empedrado, Pencahue, Maule, San Clemente, Río Claro and San Rafael.

The commune is represented in the Senate by Juan Antonio Coloma Correa (UDI) and Andrés Zaldívar Larraín (PDC) as part of the 10th senatorial constituency (Maule-North).