Last name Gruen (Grün 
, Gruen 
, גרואן 
) , in the world, is a common surname. The family name Gruen is characteristic of Western Europe, particularly Luxembourg, where it is quite a common surname, Austria, and Germany. In absolute terms, the name is most common in Germany, the United States, and Austria.
| dietrich gruen German-born American watchmaker (1847-1911), DE (b. 1847) |
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arno gruen psychologist (1923-2015), CH (b. 1923) |
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| george j. gruen American watchmaker, US (b. 1877) |
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| otto gruen holocaust victim, b. 1892-06-21, CZ (b. 1892) |
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| james gruen American screenwriter, US (b. 1894) |
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bob gruen American photographer, US (b. 1945) |
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| alfred gruen German 12th Army judge advocate, DE (b. 1896) |
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| rudolph gruen American pianist and composer (b. 1900) |
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| deborah gruen American Paralympic swimmer, US (b. 1901) |
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| victor gruen Austrian architect (1903-1980), AT (b. 1903) |
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| fred gruen Australian economist, AU (b. 1921) |
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| dieter gruen American chemist, US (b. 1922) |
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| john gruen American art critic, art historian, author, photographer, and composer (1926-2016), US (b. 1926) |
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gruen von behrens American motivational speaker and former smokeless tobacco user (1977-2015), US (b. 1977) |
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| john gruen American photographer (born 1935) (b. 1935) |
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