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Around the world, Rien (连 , Rien , リエン ) is a common epicene first name. The given name Rien is habitual in Netherlands, where it is quite a rare male name, China, where it is quite a rare unisex name, and Belgium. In absolute terms, the name is most common in China, Indonesia, and Netherlands. More prevalently, Rien is the last name as well as the forename.
Rien is also a name for the fictitious and mythical characters: Rien Hogendoorn , character in Goede tijden, slechte tijden.