Cognomen Dedduang (Dedduang 
) , in the world, is a rare last name. The cognomen Dedduang is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Dedduang is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dedduang | Thailand, United States |