Capitán Prat Province (Spanish: Provincia de Capitán Prat) is one of four provinces in the southern Chilean region of Aysén (XI).

The province is named after the naval hero Arturo Prat.

According to the 2002 census by the National Statistics Institute (INE), the province spans an area of 37,043.6 km2 (14,303 sq mi) and had a population of 3,837 inhabitants (2,154 men and 1,683 women), giving it a population density of 0.10 per km2 (0.3 per m2).

[1] As a province, Capitán Prat is a second-level administrative division, governed by a provincial governor appointed by the president.

The province comprises three communes, each governed by a municipality, headed by an alcalde: Cochrane, O'Higgins and Tortel.