Surname ณัฎฐิยา (Nattiya 
, ณัฎฐิยา ) , worldwide, is a very rare cognomen. The cognomen ณัฎฐิยา is characteristic of Thailand, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and India. Much more prevalently, ณัฎฐิยา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nattiya | Germany, Australia, United States, Thailand, India |
| ณัฎฐิยา | Thailand |