Surname Denja (Denja 
) , in the entire world, is a rare last name. The family name Denja is habitual in Tanzania, where it is a rare surname, Nigeria, where it is a very rare surname, and Indonesia. Also, Denja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Denja | Tanzania, India, Nigeria, United States, Indonesia |