Cognomen วันสุข (Wansuk 
, วันสุข , Wansook ) , all over the world, is a rare last name. The family name วันสุข is habitual in Thailand, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Likewise, วันสุข is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wansuk | China, South Korea, United States, Thailand, India |
| Wunsuk, วันสุข | Thailand |
| Wansook | United States, Thailand |