Last name Unjin (Unjin 
, Унжин 
) , in all the world, is a rare surname. The last name Unjin is habitual in Russia, where it is a very rare surname, India, and Kyrgyzstan. Not in comparison with a country's population, this name is the most popular in India, Russia, and China. More prevalently, Unjin is the forename as well as the last name.