Cognomen Gaikin (Gaikin 
, Гайкин 
) , around the globe, is a rare surname. The surname Gaikin is habitual in Belarus, where it is a very rare surname, Russia, and Kazakhstan. Not in comparison with a country's population, the name is most common in Russia, Nigeria, and Belarus. Very seldom, Gaikin is the forename as well as the last name.