
The Democratic Republic of the Congo is a multilingual country where an estimated total of 242 languages are spoken. Ethnologue lists 215 living languages. The official language, inherited from the colonial period, is French. Four indigenous languages have the status of national language: Kituba, Lingala, Swahili and Tshiluba.

The Bemba language, ChiBemba, is a 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 and Tanzania. Including all its dialects, Bemba is the most spoken indigenous Bantu language and a lingua franca in Zambia where the Bemba form the largest ethnic group. The Lamba language is closely related and some people consider it a dialect of Bemba.

French is a Romance language of the Indo-European family. It descended from the Vulgar Latin of the Roman Empire, as did all Romance languages. French evolved from Gallo-Romance, the Latin spoken in Gaul, and more specifically in Northern Gaul. Its closest relatives are the other langues d'oïl—languages historically spoken in northern France and in southern Belgium, which French (Francien) largely supplanted. French was also influenced by native Celtic languages of Northern Roman Gaul like Gallia Belgica and by the (Germanic) Frankish language of the post-Roman Frankish invaders. Today, owing to France's past overseas expansion, there are numerous French-based creole languages, most notably Haitian Creole. A French-speaking person or nation may be referred to as Francophone in both English and French.

Kirundi, also known as Rundi, is a Bantu language spoken by some 9 million people in Burundi and adjacent parts of Tanzania and the Democratic Republic of the Congo, as well as in Uganda. It is the official language of Burundi. Kirundi is mutually intelligible with Kinyarwanda, an official language of Rwanda, and the two form part of the wider dialect continuum known as Rwanda-Rundi.

Lingala (Ngala) is a Bantu language spoken throughout the northwestern part of the Democratic Republic of the Congo and a large part of the Republic of the Congo. It is spoken to a lesser degree in Angola, the Central African Republic and southern South Sudan.

Ngombe, or Lingombe, is a Bantu language spoken by about 150,000 people in the Democratic Republic of the Congo. In general, native speakers live on either side of the Congo river, and its many tributaries; more specifically, Équateur Province, Mongala District and in areas neighboring it. Ngombe is written in Latin script.

The Nilotic languages are a group of related languages spoken across a wide area between South Sudan and Tanzania by the Nilotic peoples.

Swahili, also known by its native name Kiswahili, is a Bantu language and the native language of the Swahili people. It is one of two official languages of the East African Community (EAC) countries, namely Burundi, Kenya, Rwanda, South Sudan, Tanzania, and Uganda. It is a lingua franca of other areas in the African Great Lakes region and East and Southern Africa, including some parts of the Democratic Republic of the Congo (DRC), Malawi, Mozambique, Somalia, and Zambia. Swahili is also one of the working languages of the African Union and of the Southern African Development Community. The exact number of Swahili speakers, be they native or second-language speakers, is estimated to be between 50 million to 150 million.