Surname Mwengu (Mwengu 
) , in the world, is a rare family name. The family name Mwengu is characteristic of Sub-Saharan Africa, particularly Tanzania, where it is a rare surname. Likewise, Mwengu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mwengu | United States, Zambia, Tanzania |