The Arica y Parinacota Region is one of Chile's 16 first order administrative divisions. It comprises two provinces, Arica and Parinacota. It borders Peru's Department of Tacna to the north, Bolivia's La Paz and Oruro departments to the east and Chile's Tarapacá Region to the south. Arica y Parinacota is the 5th smallest, the 3rd least populous and the 6th least densely populated of the regions of Chile. Arica is the region's capital and largest city.

Arica Province is one of two provinces of Chile's northernmost region, Arica y Parinacota. The province is bordered on the north by the Tacna Province of Peru, on the south by the Tamarugal Province in the Tarapacá Region, on the east the Parinacota Province and on the west by the Pacific Ocean. Its capital is the port city of Arica.