>
Surname Gayun (Gayun , 가윤 , Гаюн ) , in the world, is a rare cognomen. The surname Gayun is characteristic of Malaysia, where it is quite a rare surname, Ukraine, where it is a rare surname, and Belarus. Measured by absolute frequency, it is commonest in Malaysia, Ukraine, and Russia. Much less frequently, Gayun is the forename as well as the last name.