Cognomen Ghaju (Ghaju 
) , around the globe, is a rare family name. The surname Ghaju is habitual in Nepal, where it is quite a rare surname, Australia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. In absolute terms, this name is the most popular in Nepal, Australia, and the United States. Very seldom, Ghaju is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ghaju | Australia, Nepal, India, Malaysia, United States |