Cognomen 宇金 (Yujin 
, 宇金 ) , around the world, is quite a rare family name. The surname 宇金 is characteristic of South Korea, where it is quite a rare surname, Taiwan, where it is a rare surname, and Malaysia. In absolute terms, this name is the most popular in South Korea, China, and India. More frequently, 宇金 is the forename as well as the last name.