Cognomen โอกะ (Oka 
, โอกะ 
) , around the globe, is a common family name. The family name โอกะ is characteristic of Egypt, where it is quite a common surname, Ivory Coast, and Indonesia, where it is quite a rare surname. Also, โอกะ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oka | Egypt, Nigeria, Indonesia, Democratic Republic of the Congo, Ivory Coast |
| โอกะ | Thailand |