Last name Ilounga (Ilounga 
) , globally, is quite a rare cognomen. The family name Ilounga is habitual in Sub-Saharan Africa, particularly the Republic of the Congo, where it is quite a rare surname, the Democratic Republic of the Congo, and Cameroon, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ilounga | Democratic Republic of the Congo, Canada, Cameroon, Republic of the Congo |