Cognomen Wansoo (Wansoo 
) , in the entire world, is a rare family name. The family name Wansoo is characteristic of South Korea, where it is a rare surname, Thailand, where it is a very rare surname, and China, where it is an extremely rare surname. More prevalently, Wansoo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wansoo | Canada, Thailand, United States, South Korea, China |