Cognomen 思金 (Sijin 
, 思金 ) , globally, is quite a rare family name. The cognomen 思金 is characteristic of South Korea, where it is quite a rare surname, Hong Kong, where it is a rare surname, and United Arab Emirates. In absolute terms, the name is most common in South Korea, China, and India. More frequently, 思金 is the forename as well as the last name.