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