Last name Cinthia Sonia (Cinthia Sonia 
) , around the world, is an extremely rare cognomen. The cognomen Cinthia Sonia is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. More prevalently, Cinthia Sonia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cinthia Sonia | Chile, Ecuador |