The battle of Río Bueno (Spanish: Batalla de Río Bueno or Desastre de Río Bueno) was fought in 1654 between the Spanish Army of Arauco and indigenous Cuncos and Huilliches of Fütawillimapu in southern Chile. The battle took place against a background of a long-running enmity between the Cuncos and Spanish, dating back to the destruction of Osorno in 1603. More immediate causes were the killing of Spanish shipwreck survivors and looting of the cargo by Cuncos, which led to Spanish desires for a punishment, combined with the prospects of lucrative slave raiding.