Around the world, ฐณัฐฐา (ฐณัฐฐา 
) is a very rare primarily feminine, but very seldom boy's first name. The given name ฐณัฐฐา is habitual in South-eastern Asia, particularly Thailand, where it is a very rare primarily girly, but very infrequently male name.
| VARIANT | COUNTRY |
|---|---|
| ฐณัฐฐา | Thailand |
มาเจริญ, and หงษ์วิศิษฐกุล