Cognomen สวัสดิ์คงสิริ (สวัสดิ์คงสิริ 
) , in all the world, is an extremely rare surname. The last name สวัสดิ์คงสิริ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| สวัสดิ์คงสิริ | Thailand |