Tierra del Fuego Province is one of four provinces in the southern Chilean region of Magallanes and Antártica Chilena (XII). It includes the Chilean or western part of the main island of Tierra del Fuego, except for the part south of the Cordillera Darwin, which is in Antártica Chilena Province.

The Magallanes Region, officially the Magallanes y la Antártica Chilena Region, is one of Chile's 16 first order administrative divisions. It is the southernmost, largest, and second least populated region of Chile. It comprises four provinces: Última Esperanza, Magallanes, Tierra del Fuego, and Antártica Chilena.