Family name Sophonthanaruk (Sophonthanaruk 
) , in the world, is a very rare last name. The surname Sophonthanaruk is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sophonthanaruk | Thailand |
Somboon, Peeravit, Pimpitcha, Chanitnant, and Siripitchaya