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Cognomen Quillen (奎林 , 奎伦 , Quillen ) , across the world, is quite a common surname. The cognomen Quillen is habitual in the United States, where it is quite a rare surname, the Dominican Republic, where it is a rare surname, and New Zealand. In absolute terms, it is the most numerous in the United States, China, and Canada. Also, Quillen is the forename as well as the last name.