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