Family name セレン (Selen 
, Thelen 
, セレン 
) , all around the world, is a common last name. The family name セレン is habitual in Germany, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and Turkey. In absolute terms, it is commonest in Germany, the United States, and Turkey. Likewise, セレン is the forename as well as the last name.