Last name لوكين (Luken 
, Lukin 
, Liukin 
) , worldwide, is quite a common family name. The surname لوكين is habitual in Croatia, where it is quite a common surname, Estonia, where it is quite a rare surname, and Serbia. In absolute terms, it is the most numerous in the United States, Russia, and Croatia. Much less frequently, لوكين is the forename as well as the last name.