Arauco, originally from Mapudungun rag ko meaning “clayey water,” 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, 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 Araucanian Islands (disambiguation)
Biology Arauco (moth) Araucania chilensis (a sapygid wasp) Araucania (a braconid wasp genus) 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