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Last name Alder (Alder , אלדר , Альдер ) , around the globe, is a common family name. The surname Alder is habitual in Switzerland, where it is quite a common surname, Israel, and Paraguay, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in the United States, the United Kingdom, and Switzerland. Likewise, Alder is the forename as well as the last name.