Gualeguaychú may refer to: Gualeguaychú, Entre Ríos, a city in the province of Entre Ríos, Argentina the Gualeguaychú meteorite of 1932, which fell in Entre Rios, Argentina (see meteorite fall) Gualeguaychú Airport, serving the city in Entre Ríos Gualeguaychú Department, an administrative subdivision (departamento) of the province of Entre Ríos, Argentina Gualeguaychú River, a river in the province of Entre Ríos, Argentina