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Globally, Silen (Sile , Silen ) is quite a rare gender-neutral forename. The first name Silen is habitual in Aland Islands, where it is quite a common masculine name, Ireland, where it is quite a rare female name, and Romania, where it is quite a rare epicene name. In absolute terms, it is commonest in Ethiopia, India, and Nigeria. Likewise, Silen is the last name as well as the forename.
Silen is also a name for the fictitious and mythical characters: Silen , the Devilman character.