Cognomen Koumbassa (Koumbassa 
) , in the world, is a rare last name. The surname Koumbassa is habitual in Guinea, where it is quite a rare surname, France, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, it is the most numerous in Guinea, France, and the United States.
Guy, Aboubacar, Ibrahima, Khadijah, Mickaël, Maimouna, Idrissa, Natalia, Lansana, Georges, Karamba, Bangaly, Sekouba, Salimah, Mohamed, Fatoumata, Massire, Mariama, Amadou, Moussa, Oumar, Hadja, Julia, Karim, Bouba, Amara, Alpha, Aline, Sekou, Sarat, Marie, Mariame, and Jean Marie