Cognomen Swangsang (Swangsang 
) , worldwide, is a very rare last name. The last name Swangsang is habitual in Thailand, where it is a very rare surname, and Canada, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Swangsang | Canada, Thailand |
Maturos, Chalaikorn, Cholotorn, Chuphatphonp, and Pattarasaya