Surname Unn (アン 
, Unna 
, Unn 
) , all around the world, is quite a common cognomen. The family name Unn is characteristic of Estonia, where it is quite a rare surname, Japan, and Malaysia, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Japan, India, and Malaysia. Also, Unn is the forename as well as the last name.