Cognomen Oneilwe (Oneilwe 
) , around the world, is a very rare surname. The surname Oneilwe is characteristic of Sub-Saharan Africa, particularly Botswana, where it is quite a rare surname. Also, Oneilwe is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oneilwe | South Africa, Botswana |