Surname พลอยสวัสดิ์ไชย (พลอยสวัสดิ์ไชย 
) , in the entire world, is a very rare cognomen. The family name พลอยสวัสดิ์ไชย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พลอยสวัสดิ์ไชย | Thailand |