Last name Onesmo (Onesmo 
) , all over the world, is a common surname. The family name Onesmo is characteristic of Sub-Saharan Africa, particularly Tanzania, where it is quite a common surname. Also, Onesmo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onesmo | Kenya, Australia, United States, Tanzania, Brazil |