Surname Θεοδόσιος (Theodosios 
, Teodosio 
, Théodose 
) , worldwide, is a common last name. The cognomen Θεοδόσιος is habitual in Greece, where it is quite a common surname, Portugal, where it is quite a rare surname, and Philippines. In absolute terms, it is commonest in Greece, Philippines, and Brazil. Likewise, Θεοδόσιος is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Theodosios | Italy, Spain, Argentina, Greece, Brazil |
| Teodosio | Spain, Peru, Philippines, Mexico, Brazil |
| Théodose | France, Australia |
| Θεοδόσιος | Greece |
Teodosi, Teodosije, Teodosiu, Teodozio, Teodozjusz, Teodozy, Theodosius, Теодозій, and Феодосий
|
άγιος θεοδόσιος 14th century saint (b. 1300) |
|
| επίσκοπος θεοδόσιος GR (b. 1936) |
|