Cognomen Sydon (Sydon 
, Сидон 
) , throughout the world, is a rare family name. The cognomen Sydon is characteristic of South Africa, where it is a very rare surname, Germany, and Russia. Likewise, Sydon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sydon | Poland, India, South Africa, Nigeria, Germany |
| Сидон | Russia, Armenia, Ukraine |