Surname 乌金 (Ukin 
, 乌金 
) , all over the world, is a rare last name. The surname 乌金 is habitual in Papua New Guinea, where it is quite a rare surname, Malaysia, where it is a rare surname, and Indonesia. Measured by absolute frequency, it is commonest in Indonesia, Japan, and Papua New Guinea. Also, 乌金 is the forename as well as the last name.