Cognomen ギン (Gjin 
, Ginn 
, ギン 
) , worldwide, is a common last name. The surname ギン is characteristic of the United States, where it is quite a rare surname, Ireland, and Australia. Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Australia. Much less frequently, ギン is the forename as well as the last name.