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Cognomen Doel (Doel , Dole , 德尔 ) , in the world, is a common surname. The cognomen Doel is characteristic of Guam, where it is quite a common surname, Sri Lanka, and Guinea-Bissau, where it is quite a rare surname. In absolute terms, it is commonest in India, Indonesia, and the United States. Also, Doel is the forename as well as the last name.