Chiloé Province (Spanish: Provincia de Chiloé) is one of the four provinces in the southern Chilean region of Los Lagos (X).

The province spans a surface area of 9,181.6 km2 (3,545 sq mi).

[1] Its capital is Castro, and the seat of the Roman Catholic bishopric is Ancud.

As a province, Chiloé is a second-level administrative division of Chile, governed by a provincial governor who is appointed by the president.

According to the 2002 census by the National Statistics Institute (INE), the province spans an area of 7,165.5 km2 (2,767 sq mi) and had a population of 142,194 inhabitants (71,386 men and 70,808 women), giving it a population density of 19.8/km2 (51/sq mi).