Last name Mwengi (Mwengi 
) , throughout the world, is a rare family name. The surname Mwengi is characteristic of Kenya, where it is quite a rare surname, Tanzania, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. In absolute terms, this name is the most popular in Kenya, Tanzania, and the United States. Also, Mwengi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mwengi | Kenya, United Kingdom, United States, Tanzania |