Last name ธนาสิรสวัสดิ์ (ธนาสิรสวัสดิ์ 
) , across the world, is an extremely rare family name. The surname ธนาสิรสวัสดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธนาสิรสวัสดิ์ | Thailand |