Cognomen Hader (Hader 
, Хадер 
, 哈德 
) , all over the world, is a common surname. The cognomen Hader is characteristic of Iraq, where it is quite a rare surname, Austria, and Egypt. In absolute terms, the name is most common in Pakistan, Egypt, and Iraq. More prevalently, Hader is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hader | India, Pakistan, Iraq, Egypt, Germany |
| Хадер | Ukraine, Azerbaijan, Russia, Kazakhstan |
| 哈德 | China |
| Хейдер | Ukraine, Russia, Belarus, Kazakhstan |
| rudmar von hader (b. 1300) |
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| clemens hader (b. 1650) |
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| andreas hader (b. 1870) |
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| elmer stanley hader American artist, US (b. 1889) |
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| berta hader American artist, US (b. 1890) |
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| ernst hader German painter (b. 1900) |
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| franz hader DE (b. 1890) |
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josef hader Austrian comedian, actor and author, AT (b. 1962) |
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denise crosswhite hader American politician, US (b. 1965) |
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| hans hader (b. 1908) |
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bill hader American comedian and actor, US (b. 1978) |
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| widmar hader German composer, DE (b. 1941) |
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josh hader American professional baseball pitcher, US (b. 1994) |
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| josef hader Austrian poet, AT (b. 1962) |
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| manfred hader (b. 1965) |
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