Last name Dubach (Dubach 
, Дубач 
) , all over the world, is quite a rare cognomen. The surname Dubach is habitual in Switzerland, where it is quite a common surname, Latvia, where it is a rare surname, and Netherlands. In absolute terms, this name is the most popular in Switzerland, the United States, and France. Very seldom, Dubach is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Dubach | Germany, France, United States, Netherlands, Switzerland |
| Дубач | Russia, Ukraine, Belarus |
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jean dubach Swiss association football referee, CH (b. 1930) |
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| ernst dubach Swiss cyclist (1881-1982), CH (b. 1881) |
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| ulysses grant dubach (b. 1880) |
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| oswald johann woldemar dubach CH (b. 1884) |
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| werner dubach (1905-1985), CH (b. 1905) |
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| hansueli dubach cyclist, CH (b. 1937) |
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| hansruedi dubach Swiss cyclist, CH (b. 1937) |
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| margaretha dubach Swiss painter, CH (b. 1938) |
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| alfred dubach (b. 1940) |
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| alexandre dubach Swiss musician, CH (b. 1955) |
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| reto dubach Swiss politician, CH (b. 1956) |
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| aloïs dubach CH (b. 1947) |
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| martina dubach CH (b. 1952) |
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| josef dubach CH (b. 1964) |
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| j matthew dubach researcher |
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