Family name Sornwichian (Sornwichian 
) , worldwide, is a very rare cognomen. The family name Sornwichian is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Sornwichian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sornwichian | Thailand |