Surname Wivatchai (Wivatchai 
) , across the world, is an extremely rare cognomen. Much more frequently, Wivatchai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wivatchai | Thailand |
Singha, Dechpichai, Thongnim, Thongumpai, and Wongwandee