Cognomen Avyn (Авин 
, Avyn 
) , in all the world, is a very rare family name. The cognomen Avyn is characteristic of Belarus, where it is a rare surname, France, where it is a very rare surname, and Kyrgyzstan. Measured by absolute frequency, it most frequently occurs in Belarus, Russia, and France. Much less frequently, Avyn is the forename as well as the last name.