Last name นิจฉัย (นิจฉัย 
) , in the entire world, is a very rare surname. The cognomen นิจฉัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, นิจฉัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| นิจฉัย | Thailand |