Worldwide, สิทธัตถะ (Sitthat 
, สิทธัตถะ , Siwipun ) is an extremely rare gender-neutral first name.
| VARIANT | COUNTRY |
|---|---|
| สิทธัตถะ, Sitthat, Siwipun | Thailand |
Siddartha, Siddhattha, Sitatham, Sitihayat, Sitthadtha, Sitthattha, Sitthutt, Sittithas, and सिद्धार्थ