Family name Ajua (Ajua 
) , in the entire world, is a rare surname. The cognomen Ajua is habitual in Cameroon, where it is a rare surname, Nigeria, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Nigeria, Cameroon, and the United States. Likewise, Ajua is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ajua | Tanzania, Cameroon, United States, India, Nigeria |