Cognomen Subyn (Subyn 
, Субин 
) , in all the world, is a rare surname. The surname Subyn is characteristic of Belarus, where it is a rare surname, Georgia, and Russia, where it is a very rare surname. In absolute terms, it is the most numerous in Eastern Europe, particularly Russia, Belarus, and Ukraine. Much less frequently, Subyn is the forename as well as the last name.