Family name Ratsos (Ratsos 
) , globally, is a very rare cognomen. The surname Ratsos is characteristic of Greece, where it is a rare surname, Bulgaria, and France, where it is an extremely rare surname. In absolute terms, the name is most common in Greece, Bulgaria, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Ratsos | Canada, France, Bulgaria, Greece, United States |