Family name Hagena (Hagena 
) , across the world, is a rare surname. The last name Hagena is characteristic of Germany, where it is a rare surname, New Zealand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Hagena is the forename as well as the last name.
| karl hagena botanist (1806-1882) (b. 1806) |
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katharina hagena German author, DE (b. 1967) |
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| charlotte hagena DE (b. 1909) |
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| hermann hagena German jurist, fighter pilot, consultant and opinion journalist, DE (b. 1931) |
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| dorothea hagena DE (b. 1944) |
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| maike hagena Dr. rer. nat. Universität Kassel 2017 |
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