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Cognomen Khaidar (Хайдар
, Khaidar
, Хаидар
) , worldwide, is quite a rare surname. The cognomen Khaidar is habitual in Kyrgyzstan, where it is quite a rare surname, Morocco, where it is a rare surname, and Belarus. In absolute terms, it is commonest in Indonesia, Morocco, and Russia. More frequently, Khaidar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Хайдар | Kazakhstan, Uzbekistan, Russia, Tajikistan, Azerbaijan |
| Khaidar | Tanzania, India, Pakistan, Indonesia, Morocco |
| Хаидар | Kazakhstan, Russia, Tajikistan |
| Хайдарь | Russia |