Last name Kaikin (Kaikin 
, Кайкин 
) , globally, is a rare cognomen. The surname Kaikin is habitual in Azerbaijan, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Kyrgyzstan. In absolute terms, this name is the most popular in Azerbaijan, Russia, and Kazakhstan. Much less frequently, Kaikin is the forename as well as the last name.