Surname นิรัตน์ชัยกิจ (นิรัตน์ชัยกิจ 
) , throughout the world, is an extremely rare last name. The last name นิรัตน์ชัยกิจ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| นิรัตน์ชัยกิจ | Thailand |