Cognomen Jajin (Jajin 
, Жажин 
) , around the globe, is a rare last name. The last name Jajin is characteristic of Russia, where it is a rare surname, Georgia, where it is a very rare surname, and Malaysia. In absolute terms, it is the most numerous in Russia, India, and Philippines. Also, Jajin is the forename as well as the last name.