Chacabuco Province (Spanish: Provincia de Chacabuco) is one of six provinces of the Santiago Metropolitan Region in central Chile. It is located north of the Province of Santiago, which is entirely urbanized and part of the Santiago conurbation. The provincial capital, Colina, lies approximately 27 km (17 mi) north of Santiago.

As a province, Chacabuco is a second-level administrative division of Chile, governed by a provincial governor who is appointed by the president. On March 17, 2010, Angélica del Carmen Antimán Palma took office as provincial governor.

The province is composed of three communes (Spanish: comunas), each governed by a municipality consisting of an alcalde and municipal council:

The province spans an area of 2,076.1 square kilometres (802 sq mi), the third largest in the Santiago Metropolitan Region. According to the 2002 census, Chacabuco was the least populous province in the region with a total population of 132,798. At that time, there were 99,201 people living in urban areas, 33,597 living in rural areas, 69,184 men, and 63,614 women.

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