Cognomen Геркин (Gerkin 
, Gerkyn , Геркин 
) , in the world, is a rare family name. The cognomen Геркин is habitual in the United States, where it is a rare surname, Israel, and Russia, where it is a very rare surname. Not in comparison with a country's population, the name is most common in the United States, Russia, and the United Kingdom. Very seldom, Геркин is the forename as well as the last name.