Cognomen สุวรรณชัย (สุวรรณชัย 
, Suwanchai 
, Suwannachai 
) , all over the world, is quite a rare surname. The cognomen สุวรรณชัย is characteristic of Thailand, where it is quite a rare surname, Netherlands, where it is a very rare surname, and Australia. Also, สุวรรณชัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สุวรรณชัย, Suvanchai | Thailand |
| Suwanchai | United States, Thailand, Australia |
| Suwannachai | Netherlands, Thailand |
Suvanachai, Suvannachai, Suvonnachai, Suvunchai, Suwanachai, Suwannschai, and Suwunchai