Cognomen Гажу (Gaju 
, Gazhu 
, Gajou 
) , around the world, is quite a rare surname. The surname Гажу is characteristic of Mauritius, where it is quite a rare surname, Moldova, and Rwanda. In absolute terms, it is commonest in India, South Africa, and Rwanda. More frequently, Гажу is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaju | Japan, Rwanda, Moldova, South Africa, India |
| Gazhu | Russia, India, China |
| Gajou | Nigeria, India |
| Гажу | Russia, Ukraine |