Last name Gysin (Gysin 
, Гысин 
, غيسن) , all around the world, is quite a rare surname. The family name Gysin is habitual in Switzerland, where it is quite a common surname, Uruguay, where it is a rare surname, and Portugal. Not in comparison with a country's population, it is the most numerous in Switzerland, the United States, and Germany. Very seldom, Gysin is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gysin | Switzerland, United States, United Kingdom, Argentina, Germany |
| Гысин | Russia |
| uli gysin (1601-1653) (b. 1601) |
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| johannes gysin (1739-1802), CH (b. 1739) |
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| samuel gysin (1786-1844), CH (b. 1786) |
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| august gysin Swiss politician (1816-1876), CH (b. 1816) |
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| johann jakob gysin Swiss engineer (1844-1895), CH (b. 1844) |
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| adam gysin (1852-1909), CH (b. 1852) |
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brion gysin British-Canadian painter, writer, sound poet, and performance artist (1916-1986), US (b. 1916) |
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hans rudolf gysin Swiss politician, CH (b. 1940) |
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| hans gysin CH (b. 1881) |
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| emil gysin DE (b. 1883) |
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| fritz gysin (1895-1984), CH (b. 1895) |
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remo gysin Swiss politician, CH (b. 1945) |
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| arnold gysin (1897-1980), CH (b. 1897) |
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| marcel gysin (b. 1891) |
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rolf gysin Swiss athletics competitor, CH (b. 1952) |
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