Cognomen สูสี (Susi 
, สูสี 
) , in the entire world, is a common last name. The cognomen สูสี is characteristic of Estonia, where it is quite a common surname, Finland, where it is quite a rare surname, and Indonesia. Not in comparison with a country's population, it is the most numerous in Indonesia, Philippines, and the United States. More prevalently, สูสี is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Susi | Brazil, Italy, Germany, India, Indonesia |
| สูสี | Thailand |