Cognomen Дайк (Dike 
, Dyke , Dayk 
) , worldwide, is a widespread family name. The family name Дайк is habitual in Nigeria, where it is quite a common surname, Guernsey, and Jamaica, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Nigeria, India, and the United States. Also, Дайк is the forename as well as the last name.