Kituba is known by many names among its speakers. In the Republic of Congo it is called Munukutuba or Kituba. The former is a grammatically incorrect phrase which means literally "I to speak". The latter means simply "speech". The name Kituba is used in the constitution of the Republic of Congo.
In the Democratic Republic of the Congo it is called Kikongo ya leta (i.e. Kikongo of the state administration), but it is often called in short Kikongo, especially out of the region of ethnic Bakongo people. The constitution of the Democratic Republic of Congo lists Kikongo as one of the national languages. In fact, it refers to Kikongo ya leta (i.e. Kituba), because a translation of the constitution itself is written in Kituba but no translation exists in Kikongo!
There are also other historical names such as Kibulamatadi, Kikwango, Ikeleve, and Kizabave but they have largely fallen out of use. In the academic circles the language is called Kikongo-Kituba.
- From Wikipedia