Last name 发金 (发金 
, Fajin 
) , in all the world, is quite a rare cognomen. The family name 发金 is characteristic of Spain, where it is a rare surname, Argentina, where it is a very rare surname, and Portugal. Not in comparison with a country's population, it most frequently occurs in China, Spain, and Argentina. More prevalently, 发金 is the forename as well as the last name.