Cognomen Stonia (Stonia 
) , all over the world, is an extremely rare last name. The cognomen Stonia is characteristic of Latin America and the Caribbean, particularly Venezuela, where it is an extremely rare surname. Much more frequently, Stonia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Stonia | Romania, South Africa, United States, India, Democratic Republic of the Congo |