Cognomen Seog (Seog 
) , all around the world, is a rare surname. The cognomen Seog is habitual in South Korea, where it is a rare surname, Hungary, where it is a very rare surname, and Canada. Not in comparison with a country's population, the name is most common in South Korea, China, and the United States. Likewise, Seog is the forename as well as the last name.