Family name Spak (Spak 
, Spake 
, Spaker ) , across the world, is quite a rare surname. The cognomen Spak is characteristic of Eastern Europe, particularly Slovakia, where it is quite a rare surname, Czechia, and Hungary. In absolute terms, the name is most common in the United States, Brazil, and Slovakia. Much less frequently, Spak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Spak | Germany, Czechia, United States, Brazil, Slovakia |
| Spake | Myanmar, United States, Canada, France, Brazil |
| Spaker | Myanmar, Brazil, United States |
| Spack | Germany, Romania, United States, Canada, Brazil |
| carl jacobson spak SE (b. 1681) |
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fredrik spak Swedish writer and priest (1876-1926), SE (b. 1876) |
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| fredrik adolf spak Swedish military personnel (1846-1915), SE (b. 1846) |
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| franz heinrich spak Austrian civil servant, writer and journalist, AT (b. 1900) |
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hans peter spak AT (b. 1945) |
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| carl-anton spak SE (b. 1929) |
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| scott n spak researcher |
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| david spak researcher (ORCID 0000-0003-2577-9367) |
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| maria spak researcher |
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| david spak researcher (ORCID 0000-0001-6149-4057) |
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| kristina olofsdotter spak 1616 - |
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| judy m spak researcher |
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| irina spak |
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