Lusaka, city, capital of Zambia. It is situated in the south-central part of the country on a limestone plateau. Lusaka is the capital of Zambia and is by far, the largest city in the country. Although the city’s population is increasing, there is a sense of space in the city, and as far as African cities are concerned, Lusaka makes a pleasant overnight stay. The international airport makes it often the starting or finishing point of a Zambian itinerary.