Last name Fiodor (Федор 
, Фёдор , Fiodor 
, and others...) , throughout the world, is quite a rare cognomen. The surname Fiodor is characteristic of Moldova, where it is quite a common surname, Kyrgyzstan, and Belarus, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Russia, Ukraine, and Kyrgyzstan. Predominantly, Fiodor is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Фёдор, Федор | Kazakhstan, Russia, Belarus, Moldova, Ukraine |
| Fiodor | Romania, Russia, Italy, Moldova, Poland |
| פיודור | Israel |
| فيودور | Morocco, Iraq |
| Фьодор | Russia, Ukraine, Bulgaria |
Fedir, Fedja, Fedor, Feodor, Fiodar, Fiodoras, Fiódor, Fjodor, Fjodors, Fyodor, Fédor, Fëdor, Teodor, Teodoro, Theo, Theodor, Theodore, Theodoros, Theodorus, Theodōros, Théodore, Théodoros, Tivadar, Θεόδωρος, Теодор, Теодоро, Теодорос, Теодору, Теодорус, Тивадар, Федя, Федір, Феодор, Фиодор, Фйодор, Фёдар, Фіодор, Хведір, תאודורוס, תיאודור, تيودور, ثيودور, فيدور, 西奥多, and 费杰
Bat, Ivanov, Morozov, Mezuraj, Mustafa, Colombo, Ciobanu, Benites, Kolodij, Kessler, Pasetkin, Davidhi, Dulgher, Ignatov, Meriacri, Stepanuc, Chinikailo, Bodisteanu, Dostoïevski, Dostojewski, Strikovski, Kovalenkov, Irizan, Pugachevsky, Laptev, Damian, Jan, Ziu, Sina, Anna, Bala, Rusu, Gutu, Melis, Sirbu, Runaj, Darii, Dodon, Grecu, Jubea, Tomag, Fieni, Alushi, Cernis, Bouros, Passeo, Romero, Dranga, and Dostoievski