Cognomen แสงชัง (แสงชัง 
, Saengchang 
) , globally, is a very rare last name. The cognomen แสงชัง is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| แสงชัง | Thailand |
| Saengchang | United States, Thailand |