Surname Rajdin (Rajdin 
, Райдин 
) , all over the world, is a very rare cognomen. The family name Rajdin is characteristic of Georgia, where it is a rare surname, Kyrgyzstan, where it is a very rare surname, and Russia, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Georgia, India, and Kyrgyzstan. More frequently, Rajdin is the forename as well as the last name.