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Last name Birkin (柏金 , Birkin , Биркин ) , all over the world, is quite a rare surname. The cognomen Birkin is characteristic of the United Kingdom, where it is quite a rare surname, Australia, where it is a rare surname, and New Zealand. Measured by absolute frequency, this name is the most popular in the United Kingdom, Russia, and China. Also, Birkin is the forename as well as the last name.