Family name Phoolsawad (Phoolsawad 
) , across the world, is a very rare cognomen. The surname Phoolsawad is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phoolsawad | Thailand |
Thanyah, Nattaya, Natlatda, Wasithee, and Thunchanok