Cognomen Haider (حيدر 
, Haider 
, 海德 
) , all over the world, is a widespread family name. The cognomen Haider is characteristic of Iraq, where it is a common surname, Syria, and Pakistan (explore the name in all countries). Measured by absolute frequency, it is commonest in Pakistan, Iraq, and Bangladesh. More prevalently, Haider is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| حيدر | Iran, Yemen, Syria, Sudan, Iraq |
| Haider | Bangladesh, India, Pakistan, Iraq, Saudi Arabia |
| 海德 | China |
| Хайдер | Ukraine, Russia, Kyrgyzstan, Kazakhstan |
Haidar, Haidner, Haidtner, Haidèr, Haìdeŕ, Haídër, Haîder, Haïder, Haįdèr, Haıder, Heide, Heider, Heyder, Hàider, Hàidér, Hàîdér, Hàïdér, Háídéŕ, Hâider, Hâidêr, Hâîdêr, Hâïdêr, Hãider, Hãidêr, Hãìdër, Hãîdêr, Hãïdêr, Hãïdër, Hāider, Ĥặíděř, Гаидер, Гайдер, Гейдер, Хаидер, Хайдар, Хайдерь, Хайдэр, Хаідер, היידר, حیدر, ไฮเดอร์, シャー, ハイダー, and 海的儿
| ursula haider DE (b. 1413) |
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| haider ali (b. 1722) |
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karl michael haider German painter (1846-1912), DE (b. 1846) |
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| max haider Bavarian painter, draughtsman, lithographer, illustrator and hunter (1807-1873), DE (b. 1807) |
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franz haider Austrian sculptor, AT (b. 1860) |
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| chas haider US (b. 1855) |
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| johannes l. m. haider DE (b. 1855) |
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| josef haider AT (b. 1856) |
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engelbert haider German alpine skier, AT (b. 1922) |
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| franz haider Austrian politician, AT (b. 1877) |
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| hubert haider German painter (1879-1971), DE (b. 1879) |
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gerhard haider German docent and zoologist (1935-2005), DE (b. 1935) |
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salman haider Indian diplomat (1937-), IN (b. 1937) |
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| ernst haider German artist (1890-1988), DE (b. 1890) |
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moinuddin haider Pakistani general, PK (b. 1942) |
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