Cognomen Cynthia Diana (Cynthia Diana 
) , in the entire world, is an extremely rare surname. The surname Cynthia Diana is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. Much more prevalently, Cynthia Diana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cynthia Diana | Philippines, Paraguay, Peru, Italy, Chile |