Iguazu Falls, Iguazú Falls, Iguassu Falls, or Iguaçu Falls (Portuguese: Cataratas do Iguaçu [kataˈɾatɐʒ du iɡwaˈsu]; Spanish: Cataratas del Iguazú [kataˈɾatas ðel iɣwaˈsu]; Guarani: Chororo Yguasu [ɕoɾoɾo ɨɣʷasu]) are waterfalls of the Iguazu River on the border of the Argentina province of Misiones and the Brazilian state of Paraná.