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Globally, Kline (Kline , クライン , Кляйн , along with others...) is a rare gender-neutral forename. The first name Kline is habitual in the United States, where it is a very rare predominantly boy's, but scarcely female name, Philippines, where it is a very rare epicene name, and South Africa, where it is a very rare masculine name. In absolute terms, it is commonest in the United States, Philippines, and India. Much more frequently, Kline is the last name as well as the forename.
Kline is also a name for the fictitious and mythical characters: .