Surname Тивадар (Tivadar 
, Тивадар 
) , all over the world, is quite a rare last name. The surname Тивадар is habitual in Slovenia, where it is quite a rare surname, Romania, and Hungary. Also, Тивадар is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tivadar | Serbia, Slovenia, Madagascar, Romania, Hungary |
| Тивадар | Russia, Ukraine |
Fedor, Feodor, Fiodor, Fiódor, Fjodor, Fyodor, Fëdor, Teodor, Teodoro, Theo, Theodor, Theodore, Theodorus, Théodore, Tiwadar, Теодор, Теодоро, Теодору, Теодорус, Федор, Федя, Федір, Феодор, Фьодор, Фёдар, Фёдор, Хведір, פיודור, תאודורוס, תיאודור, تيودور, ثيودور, فيودور, and 西奥多