Surname Thedius (Thedius 
) , in the entire world, is a very rare cognomen. The surname Thedius is habitual in Nigeria, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. More prevalently, Thedius is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thedius | South Africa, Nigeria, United States, Tanzania, India |