Arauco or Araucanía may refer to: Places Araucanía Region, an administrative region of Chile, the heartland of the historic region of Araucania Araucanía (historic region), a historical region of Central Chile also called Arauco Arauco, Chile, a city and municipality in Arauco Province, Chile Arauco Peninsula Arauco Province, a province in the Biobío Region of Chile Arauco Department, Chile Arauco, La Rioja, Argentina Arauco Department, La Rioja, an administrative entity in La Rioja Province, Argentina Gulf of Arauco, a body of water on the coast of Chile Biology Arauco (moth) Araucania (wasp) Araucaria araucana, the Arauco pine Other uses Celulosa Arauco y Constitución (CELCO), a wood pulp and forestry enterprise in Chile See also Arauco War, a centuries-long a war in Chile involving Spaniards and Mapuches