Surname Wiwatrangkul (Wiwatrangkul 
) , across the world, is a very rare cognomen. The cognomen Wiwatrangkul is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Wiwatrangkul | Thailand |
Sittarn, Suttida, and Sireethorn