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