Cognomen Onkani (Onkani 
) , in the entire world, is quite a rare family name. The family name Onkani is characteristic of the Democratic Republic of the Congo, where it is quite a rare surname, France, where it is a very rare surname, and India, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Onkani | France, India, Democratic Republic of the Congo |