Cognomen كوستاس (Kostas 
, Costas , Kostis 
, along with others...) , across the world, is a common surname. The cognomen كوستاس is habitual in Greece, where it is quite a common surname, Cyprus, and Bolivia. Measured by absolute frequency, the name is most common in Greece, Argentina, and Spain. Likewise, كوستاس is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Costas, Kostas | Cyprus, Spain, United States, Argentina, Greece |
| Kostis | Cyprus, United Kingdom, Canada, United States, Greece |
| Costis | Cyprus, Romania, Philippines, United States, Greece |
Constantine, Constantino, Constantinus, Constantios, Costakis, Costantinos, Cottas, Dinos, Konstantinos, Konstantios, Konstantis, Konstantínos, Kostakis, Kosztasz, Kottas, Kwstas, Kóstas, Ntinos, Pelusso, Takis, Κωνσταντής, Κωνσταντίνος, Κωστάκης, Κωστής, Κώστας, Ντίνος, Τάκης, Константий, Константин, Константино, Константинос, Константінос, Констанций, Костас, קונסטנטין, and قسطنطين