Surname Umewaka (Umewaka 
, 梅若 
) , in all the world, is a very rare last name. The family name Umewaka is habitual in China, where it is an extremely rare surname, and Nigeria. More frequently, Umewaka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Umewaka | Nigeria, Japan |
| 梅若 | China |