In the world, Фьодор (Fedor 
, Fiodor 
, Feodor 
, among others...) is a common masculine first name. The first name Фьодор is habitual in Moldova, where it is quite a common boy's name, Reunion, and Georgia. In absolute terms, this name is the most popular in Germany, Moldova, and Romania. Also, Фьодор is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Fedor | Germany, Moldova, United States, Poland, Slovakia |
| Fiodor | Romania, Russia, Moldova, United States, Poland |
| Feodor | Germany, Romania, Hungary, Moldova, United States |
| Fjodor | Germany, Russia, Italy, Serbia, United States |
| Fyodor | Germany, Russia, Belarus, United States, Israel |
| Фьодор | Ukraine, Bulgaria, Russia |
Fedir, Fedja, Fiodar, Fiódor, Fjodors, Fodor, Fëdor, Teodor, Teodoro, Teuvo, Theo, Theodor, Theodore, Theodoros, Theodorus, Theodōros, Théodore, Théodoros, Tivadar, Θεόδωρος, Теодор, Теодоро, Теодорос, Теодору, Теодорус, Тивадар, Федор, Федя, Федір, Феодор, Фёдар, Фёдор, Хведір, פיודור, תאודורוס, תיאודור, تيودور, ثيودور, فيودور, 西奥多, and 费杰
Фьодор is also a popular name for the fictitious and mythical characters: Uncle Fyodor , the fictional character in Eduard Uspensky's works, Three from Prostokvashino; Father Fyodor , the fictional character in Ilf and Petrov's novel The Twelve Chairs; Fyodor Karamazov , the fictional character in novel The Brothers Karamazov by Fyodor Dostoyevsky; Fedor Ivanovich Dolokhov , the fictional character from War and Peace and Dolokhov , the operatic character in the opera Krieg und Frieden, War and Peace, and in many other works.