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Family name Seok (석 , Seok , Сеок ) , around the globe, is a common surname. The family name Seok is characteristic of South Korea, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Singapore, where it is a rare surname. Not in comparison with a country's population, the name is most common in South Korea, China, and Malaysia. Very seldom, Seok is the forename as well as the last name.