Cognomen Pörtner (Poertner 
, Pörtner ) , globally, is quite a rare surname. The last name Pörtner is characteristic of Eswatini, where it is quite a common surname, Germany, where it is quite a rare surname, and Austria. Not in comparison with a country's population, it is commonest in Germany, the United States, and Eswatini.
| VARIANT | COUNTRY |
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| Poertner | Eswatini, United States, Austria, Germany, Denmark |
| Pörtner | United States, Denmark, Germany |
| hermann dietrich pörtner DE (b. 1722) |
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| johannes matthäus pörtner German singer (1747-1790), DE (b. 1747) |
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| sebastian pörtner DE (b. 1773) |
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| hermann pörtner (b. 1879) |
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| rudolf pörtner German journalist and author, DE (b. 1912) |
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| paul pörtner German writer (1925-1984), DE (b. 1925) |
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| xenia pörtner German actress, DE (b. 1932) |
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| marlis pörtner psychologist (b. 1933) |
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| friedrich pörtner German politician, DE (b. 1942) |
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| peter pörtner German japanologist, DE (b. 1953) |
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| hans-otto pörtner researcher, DE (b. 1955) |
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| ralf pörtner researcher (ORCID 0000-0003-1163-9718) (b. 1958) |
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| stephan pörtner Swiss writer and translator, CH (b. 1965) |
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| margit pörtner Danish curler, DK (b. 1972) |
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| vivien pörtner German association football player, DE |
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Tim, Karin, Katja, Kolja, Klaus, Petra, Peter, Guido, Laura, Liane, Julia, Jutta, Jörg, Tanja, Nanna, Erich, Haiko, Heinz, Heike, Frank, Franz, Willi, Claus, Chris, Achim, Anton, Uwe, Marc, Anke, Axel, Kurt, Paul, Ralf, Rene, Dirk, Lars, Markus, Luis, Tina, Till, Nils, Egon, Hans, Fred, Ingo, Ilse, Mario, Sandy, Theo, and Moritz