Padre Las Casas (Spanish pronunciation: [ˈpaðɾe las ˈkasas]) is a Chilean city and commune located in Cautín Province, Araucanía Region.

Padre Las Casas spans a landlocked area of 400.7 km2 (155 sq mi).

[2] According to the 2002 census of the National Statistics Institute, Padre Las Casas spans an area of 400.7 km2 (155 sq mi) and has 58,795 inhabitants (29,327 men and 29,468 women).

Of these, 33,697 (57.3%) lived in urban areas and 25,098 (42.7%) in rural areas.

Between the 1992 and 2002 censuses, the population grew by 26.9% (12,470 persons).