Family name รัชนิฎา (รัชนิฎา 
) , in all the world, is an extremely rare surname. The family name รัชนิฎา is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, รัชนิฎา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัชนิฎา | Thailand |