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All over the world, Karlsson (Karlsson , カールソン , Карлссон ) is a rare gender-neutral first name. The first name Karlsson is habitual in Sweden, where it is quite a rare largely male, but infrequently female name, Algeria, where it is a very rare feminine name, and Italy, where it is a very rare boy's name. In absolute terms, it most frequently occurs in Sweden, China, and Algeria. Much more frequently, Karlsson is the last name as well as the forename.
Karlsson is also a name for the fictitious and mythical characters: .