All around the world, Hajdar (Хайдар 
, حیدر 
, Hajdar 
) is a common male first name. The first name Hajdar is characteristic of Tajikistan, where it is quite a common male name, Albania, where it is quite a rare male name, and Kazakhstan. Not in comparison with a country's population, it is commonest in Russia, Tajikistan, and Kazakhstan. Much less frequently, Hajdar is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Хайдар | Kazakhstan, Tajikistan, Uzbekistan, Russia, Azerbaijan |
| حیدر | Iran, Afghanistan, Saudi Arabia, Sudan, Iraq |
| Hajdar | Bosnia and Herzegovina, Serbia, Albania, Kosovo, North Macedonia |
| Гейдар | Kyrgyzstan, Kazakhstan, Ukraine, Russia |
| hajdar blloshmi Albanian politician, AL (b. 1860) |
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| hajdar fazlagić Bosnian teacher, BA (b. 1867) |
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| hajdar dushi Hajdar Dushi, AL (b. 1916) |
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| hajdar jashari (b. 1909) |
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| hajdar bytyqi (b. 1927) |
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| hajdar hulusija (b. 1930) |
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| hajdar muneka Albanian journalist and diplomat, AL (b. 1954) |
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| hajdar salihu (b. 1950) |
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| hajdar koleit LB (b. 1963) |
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| hajdar dodaj (b. 1972) |
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| hajdar tafa |
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| hajdar beqa RS |
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| hajdar shala football player (b. 1999) |
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