Family name Ruf (Ruf 
, روف 
, Руфь 
, among others...) , worldwide, is a common last name. The surname Ruf is characteristic of Western Europe, particularly Switzerland, where it is quite a common surname, Germany, and Austria, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Germany, Switzerland, and the United States. Much less frequently, Ruf is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ruf | United States, Bangladesh, Switzerland, Indonesia, Germany |
| روف | Saudi Arabia, Iran, Afghanistan, Egypt, Sudan |
| Руфь | Ukraine, Russia, Kazakhstan |
| Руф | Ukraine, Kazakhstan, Russia, Azerbaijan, Kyrgyzstan |
| ルフ | Japan |
| jakob ruf Swiss writer, CH (b. 1505) |
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| johann michael ruf (b. 1759) |
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| sebastian ruf (1802-1877), AT (b. 1802) |
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| conrad ruf German photographer, DE (b. 1840) |
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| anton ruf AT (b. 1840) |
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| franz ruf (b. 1845) |
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| theodor anton ruf Austrian architect (1865 - 1943), AT (b. 1865) |
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| august ruf German priest, DE (b. 1869) |
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rudolf ruf German politician (1922-2012), DE (b. 1922) |
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| camille ruf Swiss Photographer (b. 1872) |
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| konrad ruf (b. 1870) |
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| leopold ruf Austrian concentration camp victim, AT (b. 1885) |
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| heinrich ruf (b. 1876) |
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werner ruf German political scientist and sociologist, DE (b. 1937) |
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| alfons ruf (1887-1931), CH (b. 1887) |
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