Cognomen Iuldash (Юлдаш 
, Iuldash 
) , in all the world, is a rare last name. The last name Iuldash is habitual in Kyrgyzstan, where it is quite a rare surname, Kazakhstan, where it is a very rare surname, and Finland. Measured by absolute frequency, it is commonest in Kyrgyzstan, Russia, and Kazakhstan. More frequently, Iuldash is the forename as well as the last name.