Globally, Oneja (Oneja 
) is a rare principally girly, but very infrequently masculine forename. The given name Oneja is characteristic of Southern Asia, particularly India, where it is an extremely rare girly name. Much less frequently, Oneja is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Oneja | United States, India, Nigeria |