Cognomen Maduja (Maduja 
) , in the world, is a very rare family name. The cognomen Maduja is characteristic of Philippines, where it is a very rare surname, and India, where it is an extremely rare surname. Much more frequently, Maduja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Maduja | Philippines, United States, Democratic Republic of the Congo, India, Sri Lanka |