Cognomen Mbulayi (Mbulayi 
) , in all the world, is a rare last name. The surname Mbulayi is habitual in Sub-Saharan Africa, particularly Botswana, where it is quite a rare surname, Zimbabwe, and the Democratic Republic of the Congo, where it is a rare surname. Much less frequently, Mbulayi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mbulayi | Botswana, Democratic Republic of the Congo, Zimbabwe, South Africa, United States |