Antofagasta Province (Provincia de Antofagasta) is one of three provinces in the northern Chilean region of Antofagasta (II). The capital is the port city of Antofagasta. Located within the Atacama Desert, it borders the El Loa and Tocopilla provinces to the north, the Pacific Ocean to the West and the Atacama Region to the south.
Before 1866, this region was disputed and claimed by Chile and Bolivia. After the Boundary Treaty of 1866 between the two nations the province was part Bolivia, and was known as the Atacama Department, or the Litoral. The Secret Treaty of 1873 between Peru and Bolivia was followed by the Boundary Treaty of 1874 between Bolivia and Chile. Afterwards Chile defeated both Peru and Bolivia in the War of the Pacific of 1879–84. The Antofagasta region was occupied by Chile during the War and administered as the Antofagasta Territory (which was neither a province or department) until 1888, when the Antofagasta Department was created. It was officially ceded to Chile by Bolivia in 1904. Bolivia still argues that this was a forced takeover of part of a country by a stronger nation.
