Iona National Park is the largest and oldest national park in Angola. It is situated in the Southwestern corner of the country, in Namibe Province. It is roughly bound by the Atlantic Ocean to the West, an escarpment to the East that marks the beginning of the interior plateau, the Curoca River to the North, and the Cunene River to the South. It is about 200 kilometres (120 mi) south of the city of Namibe and covers 5,850 square miles (15,200 km2) sq. miles.

Namibe Province is a province of Angola. Under Portuguese rule it was the Moçâmedes District. It has an area of 57,091 km2 and had a 2014 census population of 495,326. The port and city of Moçâmedes is the capital of the province with a population of 250,000 in 2014. Iona National Park lies within the province.