Family name Kynyn (Kynyn 
, Кынин 
) , in all the world, is a rare last name. The surname Kynyn is characteristic of Russia, where it is a rare surname, Belarus, where it is a very rare surname, and Kyrgyzstan. Measured by absolute frequency, it is the most numerous in Russia, Belarus, and Kazakhstan. Likewise, Kynyn is the forename as well as the last name.