Submitted by mhabich on Fri, 10/30/2020 - 14:43 La Rioja is a province in the Andean Northwest region of Argentina. Other Provinces in Andean Northwest Catamarca Jujuy Salta Santiago del Estero Tucumán Other regions of Argentina Andean Northwest Chaco Formosa Cuyo Mesopotamia Pampas Patagonia Tierra del Fuego