Family name Mwanini (Mwanini 
) , globally, is an extremely rare cognomen. The last name Mwanini is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Mwanini is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mwanini | Tanzania, United States, South Africa |