Surname Konstantyn (Константин 
, Костянтин , Konstantyn 
) , across the world, is a common last name. The cognomen Konstantyn is characteristic of Kyrgyzstan, where it is quite a common surname, Armenia, and Bulgaria (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Russia, Kyrgyzstan, and Bulgaria. Predominantly, Konstantyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Константин | Azerbaijan, Kazakhstan, Russia, Belarus, Ukraine |
| Костянтин | Russia, Ukraine |
| Konstantyn | Russia, United States, Poland, France, Ukraine |
| Константын | Russia |
C-Tin, Constantijn, Constantin, Constantine, Constantino, Constantinus, Constantí, Constantín, Costantinos, Costas, Konstantin, Konstantinas, Konstantinos, Konstanty, Konstantín, Konstantínos, Kosta, Kostas, Kostiantyn, Kostjantyn, Kostyantyn, Κωνσταντίνος, Κώστας, Ντίνος, Канстанцін, Константи, Константино, Константинос, Константы, Константій, Константінос, Констянтин, Коста, Костен, Костя, קונסטאנטין, קונסטנטין, קונסטנטינוס, قسطنطين, كونستانتين, კონსტანტინე, and コスタ