Family name Sylvestr (Сильвестр 
, Силвестр , Sylvestr 
) , across the world, is a rare cognomen. The last name Sylvestr is characteristic of Eastern Europe, particularly Slovakia, where it is quite a rare surname, Czechia, where it is a rare surname, and Ukraine, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Slovakia, Czechia, and Nigeria. More frequently, Sylvestr is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Сильвестр | Kazakhstan, Russia, Ukraine, Belarus |
| Силвестр | Russia |
| Sylvestr | Slovakia, Czechia, United States, Nigeria, China |
Silvester, Silvestr, Sylvester, Szilveszter, Силвестер, Сильвестер, Сылвестр, Сільвестер, Сільвестр, سيلفستر, and 西尔维斯特
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sylvestr krnka Czech gunsmith and inventor, CZ (b. 1825) |
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| sylvestr voda CZ (b. 1879) |
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| sylvestr kubáč CZ (b. 1886) |
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| sylvestr špicner (b. 1889) |
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| sylvestr talla CZ (b. 1901) |
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| jaromír sylvestr SK (b. 1936) |
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| sylvestr chrastil CZ (b. 1944) |
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| jakub sylvestr Slovak football striker who currently plays for Hapoel Haifa, SK (b. 1989) |
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| jan sylvestr CZ |
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