Surname Жумабаы (Жумабаы 
, Jumabay 
) , throughout the world, is a very rare family name. The surname Жумабаы is characteristic of Kazakhstan, where it is a very rare surname, Russia, and Philippines, where it is an extremely rare surname. More frequently, Жумабаы is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Жумабаы | Russia |
| Jumabay | Kazakhstan, United States, Philippines |