Surname Kosztasz (Kosztasz 
) , in all the world, is an extremely rare family name. Much more frequently, Kosztasz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kosztasz | Hungary |
Constantios, Costakis, Costantinos, Costas, Costis, Cottas, Dinos, Konstantinos, Konstantios, Konstantis, Konstantínos, Kostakis, Kostas, Kostis, Kottas, Kóstas, Ntinos, Takis, Κωνσταντής, Κωνσταντίνος, Κωστάκης, Κωστής, Κώστας, Ντίνος, Τάκης, Константий, Константинос, Константінос, Констанций, Костас, קונסטנטין, قسطنطين, and كوستاس