Cognomen Haan (هان 
, Haan 
, Хан 
, and others...) , all around the world, is a common last name. The last name Haan is characteristic of Netherlands, where it is a common surname, Kyrgyzstan, where it is quite a common surname, and Mauritius, where it is quite a rare surname. In absolute terms, it is commonest in Netherlands, the United States, and Egypt. Much less frequently, Haan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| هان | Tunisia, Egypt, Sudan, Iraq, Algeria |
| Haan | Belgium, Netherlands, Germany, Indonesia, United States |
| Хан | Azerbaijan, Kyrgyzstan, Belarus, Armenia, Uzbekistan |
| Гаан | Kyrgyzstan, Russia, Kazakhstan, Ukraine, United States |
| Хаан | Russia, Ukraine |
| katharina haan DE (b. 1581) |
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| georg haan German civil servant, DE (b. 1600) |
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| christoph haan DE (b. 1608) |
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| benno haan DK (b. 1631) |
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| ignaz haan (1680-1761) (b. 1680) |
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| gerrit de haan 1683 Haarlem - 31 Oct 1755 Amsterdam (b. 1683) |
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| johann nepomuk haan (1690-1744), CZ (b. 1690) |
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| margaretha de haan 5 May 1697 Amsterdam - 1 May 1790 Amsterdam (b. 1697) |
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| abraham de haan 17 Oct 1698 Amsterdam - 22 Apr 1760 Amsterdam (b. 1698) |
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| elisabeth de haan 1 May 1708 Amsterdam - 6 May 1778 Amsterdam (b. 1708) |
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| johann michael haan (b. 1701) |
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| václav haan Czech composer and organist, CZ (b. 1714) |
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| elisabeth de haan 1735 - 1800 (b. 1735) |
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| catharina de haan 6 Aug 1736 Amsterdam - 4 Sep 1776 Amsterdam (b. 1736) |
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| mathias wilhelm von haan (1737-1816), AT (b. 1737) |
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