Family name Kiljan (Cillian
, Kiljan
, Кильян
) , around the world, is quite a rare surname. The last name Kiljan is habitual in Iceland, where it is quite a rare surname, Poland, and Netherlands, where it is a rare surname. Not in comparison with a country's population, it is commonest in Poland, Russia, and Netherlands. More prevalently, Kiljan is the forename as well as the last name.