Surname Omuka (Omuka 
) , worldwide, is a rare cognomen. The cognomen Omuka is habitual in Kenya, where it is quite a rare surname, Nigeria, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Omuka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Omuka | Nigeria, United States, Kenya |