Cognomen Banuka (Banuka 
) , worldwide, is quite a rare family name. The surname Banuka is characteristic of Sri Lanka, where it is quite a rare surname, India, where it is a very rare surname, and Malaysia. Likewise, Banuka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Banuka | United Kingdom, United States, Malaysia, Sri Lanka, India |