All over the world, Kalantzopoulos (Kalantzopoulos 
) is an extremely rare unknown gender given name. Much more frequently, Kalantzopoulos is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kalantzopoulos | Italy, Switzerland, United States, Greece, Brazil |
Gus, Ioannis, Orsalia, Sotirios, Calliopi, Cristina, Dimitris, Nicolas, Georgios, Nikolaos, Alexander, Dimitrios, Alexandros, Aristeidis, Athanasios, Nicholas, Dimitri, Angelos, Andreas, Alex, Aris, Lucy, John, Tula, Nick, Sakis, Diana, Joyce, Eleni, Helen, Costas, Kostas, George, Elaina, Charalampos, and Konstantinos