Surname Чан-Сун (Чан-Сун 
) , around the world, is an extremely rare cognomen. The family name Чан-Сун is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname. More prevalently, Чан-Сун is the forename as well as the last name. Parts of the name also exists independently as a last name Чан, and a last name Сун.