Submitted by mhabich on Fri, 10/30/2020 - 14:46 Tucumán is in the Andean Northwest region of Argentina. It's the smallest province of Argentina and is surrounded by Salta, Catamarca and Santiago del Estero provinces. Other regions of Argentina Andean Northwest Chaco Formosa Cuyo Mesopotamia Pampas Patagonia Tierra del Fuego