Last name Dayker (Dayker 
, Дайкер 
) , globally, is a rare cognomen. The family name Dayker is habitual in Kazakhstan, where it is a rare surname, Kyrgyzstan, and Venezuela, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Kazakhstan, Russia, and Kyrgyzstan. Much less frequently, Dayker is the forename as well as the last name.