The Tonga language of Zambia and Zimbabwe is a Bantu Language primarily spoken by the Tonga people in those countries who live mainly in the Southern and Western provinces of Zambia, and in northern Zimbabwe, with a few in Mozambique. The language is also spoken by the Iwe, Toka and Leya people, perhaps by the Kafwe Twa, as well as many bilingual Zambians and Zimbabweans. It is one of the major lingua francas in Zambia, together with Bemba, Lozi andNyanja. The Tonga of Malawi is not particularly close. Wikipedia