Cognomen Adamantia (Adamantia 
) , in all the world, is quite a common surname. The family name Adamantia is characteristic of Southern Europe, particularly Greece, where it is quite a common surname. Likewise, Adamantia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Adamantia | United Kingdom, Australia, Gabon, United States, Greece |