Surname Phowattanachai (Phowattanachai 
) , worldwide, is a very rare cognomen. The last name Phowattanachai is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phowattanachai | Thailand |
Phichapoom, Nattapong, and Phitchayada