Family name Бирн (Byrne 
, Birn 
, Byrn ) , globally, is a widespread surname. The cognomen Бирн is characteristic of Northern Europe, particularly Ireland, where it is a widespread surname, Guernsey, where it is a common surname, and Jersey, where it is quite a common surname (explore the name in all countries). In absolute terms, the name is most common in Ireland, the United States, and the United Kingdom. Very seldom, Бирн is the forename as well as the last name.