Cognomen Pinin (Pinin 
, Пинин 
) , across the world, is a rare last name. The family name Pinin is characteristic of Russia, where it is a rare surname, Belarus, where it is a very rare surname, and Peru. Measured by absolute frequency, this name is the most popular in Russia, Indonesia, and Thailand. Much less frequently, Pinin is the forename as well as the last name.