Surname สุทธิศิริ (Sutsiri 
, สุทธิศิริ , Suthisiri 
) , globally, is a rare cognomen. The cognomen สุทธิศิริ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, สุทธิศิริ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sutsiri, Sootthsiri, สุทธิศิริ | Thailand |
| Suthisiri | United States, Thailand |
Suthamsiri, Suthsiri, Sutisiri, Sutthisiri, and Suttisiri