Surname Unsook (Unsook 
) , all around the world, is a very rare family name. The family name Unsook is habitual in Thailand, where it is a very rare surname, China, where it is an extremely rare surname, and the United States. More frequently, Unsook is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Unsook | South Korea, Thailand, United States, China, Canada |