Last name Tsarin (Царин 
, Tsarin 
) , globally, is a rare cognomen. The surname Tsarin is characteristic of Estonia, where it is a rare surname, Russia, where it is a very rare surname, and Kyrgyzstan. Measured by absolute frequency, this name is the most popular in Russia, Ukraine, and Estonia. Very seldom, Tsarin is the forename as well as the last name.