Last name Dīk (Dyke 
, Diek , Deich 
) , around the world, is a common surname. The surname Dīk is habitual in Guernsey, where it is quite a common surname, Jamaica, where it is quite a rare surname, and the United Kingdom. Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and Canada. Much less frequently, Dīk is the forename as well as the last name.