Cognomen Rujus (Rujus 
) , in all the world, is an extremely rare family name. The family name Rujus is habitual in South-eastern Asia, particularly Philippines, where it is an extremely rare surname. Much more prevalently, Rujus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rujus | India, Philippines, Democratic Republic of the Congo |