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In the entire world, Mulder (Mulder , Мульдер , Мюлдер , and others...) is a rare gender-neutral forename. The forename Mulder is habitual in Indonesia, where it is a very rare epicene name, South Africa, where it is a very rare mostly male, but uncommonly girly name, and China, where it is an extremely rare boy's name. Much more frequently, Mulder is the last name as well as the forename.
Mulder is also a name for the fictitious and mythical characters: .