Last name กุศลสวัสดิ์ (กุศลสวัสดิ์ 
, Charusawat , Charusawatdi ) , all over the world, is a rare family name. The surname กุศลสวัสดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kusolsawas, Charusawatdi, Charusawat, กุศลสวัสดิ์ | Thailand |