Surname Ajdar (Айдар 
, Ajdar 
, Аждар 
) , in the world, is quite a rare family name. The surname Ajdar is habitual in Kyrgyzstan, where it is quite a common surname, Bosnia and Herzegovina, where it is quite a rare surname, and North Macedonia. Measured by absolute frequency, the name is most common in Kyrgyzstan, Russia, and Kazakhstan. More prevalently, Ajdar is the forename as well as the last name.