Cognomen Διαμαντής (Diamantis 
, Diamandi , Διαμαντής ) , around the world, is a common surname. The family name Διαμαντής is habitual in Greece, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Albania. In absolute terms, it most frequently occurs in Greece, the United States, and Romania. Likewise, Διαμαντής is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Diamantis, Diamandi | Germany, Romania, Australia, United States, Greece |
| Διαμαντής | Greece |
| Diamandis | Germany, United Kingdom, Australia, United States, Greece |
Adam, Adamantios, Adamos, Αδαμάντιος, Адам, אדם, آدم, アダム, 亚当, and 亞當
|
διομήδης διαμαντής Greek politician, GR (b. 1843) |
|
|
περικλής διαμαντής Greek person with the ability to remember numbers and perform calculations, GR (b. 1895) |
|
| γεώργιος διαμαντής Greek sport shooter, GR (b. 1900) |
|
|
| αδαμάντιος διαμαντής Cypriot painter (1900-1994), CY (b. 1900) |
|
|
| απόστολος διαμαντής Greek economist, GR (b. 1955) |
|
|
| δημήτρης διαμαντής Greek footballer, GR (b. 1979) |
|
|
| χρήστος διαμαντής Greek musician, GR |
|
|
| φειδίας διαμαντής Cypriot mayor, CY |
|
|
| νίκος διαμαντής Greek director, GR |
|
|
| απόστολος διαμαντής Greek footballer, GR |
|