Last name Ouban (Ouban 
) , all over the world, is a very rare surname. The family name Ouban is habitual in New Zealand, where it is a very rare surname, Australia, and China, where it is an extremely rare surname. Also, Ouban is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ouban | China, New Zealand, Australia |