Tshiluba language

Tshiluba, known as Cilubà in the official orthography, and also known as Luba-Kasai and Luba-Lulua, is a Bantu language (Zone L) of Central Africa and a national language of the Democratic Republic of the Congo, alongside Lingala, Swahili, and Kikongo ya leta.

An eastern dialect is spoken by the Luba people of the East Kasai Region and a western dialect by the Lulua people of the West Kasai Region. The total number of speakers was estimated at 6.3 million in 1991.

Within the Zone L Bantu languages, Tshiluba is one of a group of languages which form the "Luba" group, together with Kaonde (L40), Kete (L20), Kanyok, Luba-Katanga (Kiluba), Sanga, Zela and Bangubangu. The L20, L30 and L60 languages are also grouped as the Luban languages within Zone L Bantu.