Family name โอคุมะ (โอคุมะ 
, Ohkuma 
) , globally, is a very rare surname. The surname โอคุมะ is habitual in New Zealand, where it is a very rare surname, Thailand, where it is an extremely rare surname, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| โอคุมะ | Thailand |
| Ohkuma | Brazil, New Zealand, United States |