Cognomen סינתיה (Cynthia 
, Sintiya 
, סינתיה 
) , across the world, is a widespread family name. The cognomen סינתיה is habitual in Mexico, where it is quite a common surname, Cameroon, and Guadeloupe (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in Mexico, Nigeria, and Indonesia. More prevalently, סינתיה is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cynthia | South Africa, Philippines, Mexico, Nigeria, United States |
| Sintiya | Indonesia, Philippines, Nigeria, United States, India |
| סינתיה | Israel |