The Tswana language, Setswana, is a language spoken in southern Africa by about five million people. It is a Bantu language belonging to the Niger–Congo language family within the Sotho languages branch of Zone S (S.30), and is closely related to the Northern- and Southern Sotho languages, as well as the Kgalagadi language and the Lozi language.Tswana is an official language and lingua franca of Botswana.