Last name Janshin (Janshin 
, Жаншин 
, Яншин 
) , around the world, is a rare cognomen. The surname Janshin is characteristic of Kazakhstan, where it is a rare surname, Russia, and Kyrgyzstan. Not in comparison with a country's population, it is commonest in Russia, Kazakhstan, and Ukraine. Very seldom, Janshin is the forename as well as the last name.