The Bemba language, ChiBemba (also Cibemba, Ichibemba, Icibemba and Chiwemba), is a major Bantu language spoken primarily in north-eastern Zambia by the Bemba people and as a lingua franca by about 18 related ethnic groups, including the Bisa people of Mpika and Lake Bangweulu, and to a lesser extent in Katanga in the Democratic Republic of the Congo, Tanzania, and Botswana. Including all its dialects, Bemba is the most spoken indigenous language in Zambia. The Lamba language is closely related and some people consider it a dialect of Bemba.