Family name Константи (Konstanti 
, Konstanty 
, Константи 
) , around the world, is a common cognomen. The cognomen Константи is characteristic of Poland, where it is quite a common surname, Greece, and Cyprus. Measured by absolute frequency, it is commonest in Poland, Greece, and Germany. Much less frequently, Константи is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Konstanti | Germany, Cyprus, United Kingdom, United States, Greece |
| Konstanty | Germany, Spain, Australia, United States, Poland |
| Константи | Russia, Ukraine |
| Constantí | Spain |
C-Tin, Constantijn, Constantin, Constantine, Constantino, Constantinus, Costantino, Costantinos, Costas, Konstantin, Konstantinas, Konstantinos, Konstantins, Konstantyn, Konstantín, Konstantínos, Konstantīns, Kosta, Kostas, Kostiantyn, Kostjantyn, Kostyantyn, Κωνσταντίνος, Κώστας, Ντίνος, Канстанцін, Константин, Константино, Константинос, Константинс, Константы, Константій, Константінос, Коста, Костантино, Костен, Костя, Костянтин, קונסטנטין, قسطنطين, كونستانتين, კონსტანტინე, and コスタ