Family name Suk In (Suk In 
) , in the world, is a very rare last name. The surname Suk In is habitual in Thailand, where it is a very rare surname, Colombia, and Chile, where it is an extremely rare surname. More prevalently, Suk In is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suk In | Colombia, Thailand, Chile, United States, South Korea |