The Bongo languages, or Bongo–Baka, comprise six languages spoken in South Sudan. They are members of the Central Sudanic language family.
The most populous Bongo language is Jur Modo, spoken by a hundred thousand people. The languages are:
Bongo–Baka Bongo Baka Morokodo–Beli Jur Modo Morokodo (Nyamusa-Molo, Mo’da) Jur Beli (Beli) Mittu
In various classifications, Bongo is sometimes split off from the rest of the family, so the phrase Bongo–Baka may be less ambiguous than simply Bongo.For example, Ethnologue places Bongo in its own branch of Bongo–Baka, but then comments that it is similar to Jur Beli in the main branch.
However, Boyeldieu (2006)Boyeldieu, Pascal. 2006. Présentation des langues Sara-Bongo-Baguirmiennes . Paris: CNRS-LLACAN (online version). does not consider Bongo–Baka to be a valid grouping, and considers Bongo and Baka to each be primary splits from Proto-Sara-Bongo-Bagirmi.
References
Roger Blench (n.d.) Nilo-Saharan language listing