Cognomen Changsook (Changsook 
) , all over the world, is a very rare family name. The last name Changsook is habitual in Cambodia, where it is a very rare surname, and China, where it is an extremely rare surname. Much more frequently, Changsook is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Changsook | China, South Korea, Cambodia, United States, Canada |