Cognomen Khayder (Хайдер 
, Хайдэр , Хаидер ) , around the world, is a rare surname. The family name Khayder is characteristic of Morocco, where it is a very rare surname, Kyrgyzstan, and Ukraine. Measured by absolute frequency, it is commonest in Russia, Morocco, and Ukraine. More frequently, Khayder is the forename as well as the last name.