Last name Kelgin (Kelgin 
, Кельгин 
) , in all the world, is a very rare surname. The family name Kelgin is characteristic of Kazakhstan, where it is a rare surname, Russia, where it is a very rare surname, and South Africa, where it is an extremely rare surname. In absolute terms, this name is the most popular in Russia, Kazakhstan, and the United States. Very seldom, Kelgin is the forename as well as the last name.