Surname Olchin (Olchin 
, Ольхин 
) , all over the world, is a rare family name. The surname Olchin is characteristic of Kazakhstan, where it is a rare surname, Russia, and Belarus. Not in comparison with a country's population, it most frequently occurs in Russia, Kazakhstan, and the United States. Much less frequently, Olchin is the forename as well as the last name.