Cognomen Steinhart (Steinhart 
) , around the world, is quite a rare surname. The last name Steinhart is habitual in Germany, where it is quite a rare surname, Austria, and Israel. Measured by absolute frequency, it most frequently occurs in Germany, the United States, and Austria.
| VARIANT | COUNTRY |
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| Steinhart | Czechia, Israel, Austria, United States, Germany |
| franz steinhart DE (b. 1669) |
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| heinrich christoph steinhart German author (1762-1810), DE (b. 1762) |
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| franz steinhart 1774 Rechnitz - 1844 Salzburg (b. 1774) |
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ignatz steinhart American banker and philanthropist, US (b. 1840) |
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| karl steinhart German classical philologist (1801-1872), DE (b. 1801) |
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frank maximilian steinhart German-American diplomat and industrialist (1864-1938), US (b. 1864) |
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franz seraphin edler von steinhart AT (b. 1865) |
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| wilhelm steinhart (b. 1819) |
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| william steinhart German-American San Francisco businessman (b. 1830) |
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| wilhelm steinhart German classical philologist and high school teacher, DE (b. 1832) |
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| sigmund steinhart American merchant and stockbroker (b. 1832) |
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| ferdinand edler von steinhart (1870-1963) (b. 1870) |
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| bernhard steinhart prisoner of a Nazi regime, AT (b. 1872) |
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| richard steinhart holocaust victim, b. 1873-05-26, CZ (b. 1873) |
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| bertha steinhart holocaust victim, b. 1875-09-01, CZ (b. 1875) |
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