Cognomen Контантин (Контантин 
, Kontantin 
) , in all the world, is a very rare last name. The family name Контантин is habitual in Greece, where it is a rare surname, Kyrgyzstan, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Greece, Ukraine, and Russia. More frequently, Контантин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Контантин | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Kontantin | Russia, Spain, United States, India, Greece |