Gualeguaychú

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