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Cognomen Dyke (Dyke , ダイク , 戴克 , and others...) , in all the world, is quite a common surname. The surname Dyke is habitual in Guernsey, where it is quite a common surname, Jamaica, where it is quite a rare surname, and the United Kingdom. In absolute terms, the name is most common in the United States, the United Kingdom, and Canada. Very seldom, Dyke is the forename as well as the last name.