Cognomen Dar'Ja (Дарья 
, Dar'Ja ) , throughout the world, is a common surname. The cognomen Dar'Ja is characteristic of Kyrgyzstan, where it is quite a common surname, Moldova, and Belarus. In absolute terms, the name is most common in Russia, Belarus, and Kyrgyzstan. Predominantly, Dar'Ja is the forename as well as the last name.