Cognomen Fleischer (Fleischer 
, פליישר 
, Флейшер 
) , across the world, is a common family name. The last name Fleischer is characteristic of Greenland, where it is a common surname, Germany, where it is quite a common surname, and New Zealand. Not in comparison with a country's population, it is commonest in Germany, the United States, and New Zealand. Much less frequently, Fleischer is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Fleischer | Germany, Austria, Ghana, United States, New Zealand |
| פליישר | Israel |
| Флейшер | Ukraine, Russia, Belarus |
Fleischhacker, Fleischhauer, Fleischmann, Fleischner, Metzger, Мецгер, Флеисчер, Флейшман, Фляйшер, and פליישמן
| peter fleischer (b. 1520) |
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| johann fleischer German theologian (1539-1593), PL (b. 1539) |
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| georg fleischer DE (b. 1530) |
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| esaias fleischer Danish pharmacist (b. 1580) |
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| johannes fleischer botanist (1582-1608), PL (b. 1582) |
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| joachim fleischer (b. 1587) |
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| martha fleischer (b. 1615) |
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| wendelina fleischer (b. 1622) |
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| esaias fleischer Danish priest (b. 1633) |
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johann lorenz fleischer German jurist, DE (b. 1689) |
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| tobias fleischer PL (b. 1630) |
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| tobias fleischer Transylvanian Saxon poet (b. 1647) |
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| christoph fleischer (1650-1709), DE (b. 1650) |
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| johann theodor fleischer (b. 1651) |
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| johann fleischer DE (b. 1651) |
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