- Fulɓe (singular Pullo). Called Peuhl or Peul in French, Fula or Fulani in English, who are chiefly found in the mountainous region of Fouta Djallon;
- Maninka. Malinke in French, Mandingo in English, mostly inhabiting the savanna of Upper Guinea and the Forest region;
- Susus or Soussous. Susu is not a lingua franca in Guinea. Although it is commonly spoken in the coastal areas, including the capital, Conakry, it is not largely understood in the interior of the country.
- Several small groups (Gerzé or Kpelle,
Toma, Kissis, etc.) in the forest region and Bagas (including
Koniagis etc. in the coastal area.
West Africans make up the largest non-Guinean population. Non-Africans total about 30,000 (mostly French, other Europeans, and Lebanese). Seven national languages are used extensively; the major written languages are French, Pular (English: Fula; French: Peul or Peuhl), and Arabic.
Other languages have established Latin orthographies that are used somewhat, notably for Susu and Maninka. The N'Ko script is increasingly used on a grassroots level for the Maninka language.