Cognomen Wiwattanachai (Wiwattanachai 
) , in the world, is an extremely rare family name. The surname Wiwattanachai is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, Wiwattanachai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wiwattanachai | Thailand |