Iguaçu, Iguazú or Yguazú may refer to:
Inhabited places Puerto Iguazú, Argentina Foz do Iguaçu, Paraná, Brazil Nova Iguaçu, Rio de Janeiro, Brazil Nova Iguaçu de Goiás, Goiás, Brazil Iguaçu Territory, a former Brazilian federal territory Iguaçu state, a proposed Brazilian state Yguazú District, a municipality in Paraguay, formerly known as Colonia Yguazú
Rivers Iguaçu River (Rio de Janeiro), a river in the state of Rio de Janeiro, Brazil Iguazu River, river in Brazil and Argentina Iguazu Falls, on the Iguazu River Yguazú River, Paraguay
Other uses Iguaçu, a 1977 album by Passport 1684 Iguassú, a main belt asteroid Iguaçu National Park (Brazil) Iguazú National Park (Argentina)