Last name Šimkus (Simkus 
, Шимкус 
, Šimkus ) , throughout the world, is quite a rare cognomen. The family name Šimkus is habitual in Northern Europe, particularly Lithuania, where it is quite a common surname, Latvia, where it is quite a rare surname, and Estonia. Not in comparison with a country's population, it most frequently occurs in Lithuania, the United States, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Simkus | Australia, Lithuania, United Kingdom, United States, Latvia |
| Шимкус | Kazakhstan, Russia, Ukraine, Belarus |
| Šimkus | United Kingdom, Lithuania |
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jonas šimkus LT (b. 1873) |
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| antanas šimkus Lithuanian Righteous Among the Nations, LT (b. 1903) |
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| aleksandras šimkus LT (b. 1897) |
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| valerijonas šimkus (b. 1907) |
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| algis šimkus Lithuanian composer, US (b. 1917) |
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| vaclovas šimkus LT (b. 1908) |
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| sigizmundas šimkus politician, LT (b. 1931) |
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| bronius šimkus LT (b. 1924) |
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| algirdas šimkus LT (b. 1927) |
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| izidorius šimkus LT (b. 1949) |
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| andrius šimkus Lithuanian chess player, LT (b. 1961) |
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| edmundas šimkus LT (b. 1954) |
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| dainius šimkus Lithuanian association football player, LT (b. 1974) |
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| remigijus šimkus researcher |
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| pranas šimkus Lithuanian Righteous Among the Nations, LT |
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Matas, Saulius, Alvydas, Andrius, Artūras, Arvydas, Arūnas, Airidas, Aivaras, Aurimas, Audrius, Karolis, Paulius, Ramunas, Rihards, Dainius, Donatas, Dovydas, Nerijus, Edgaras, Edvinas, Evaldas, Fredas, Vytenis, Vilius, Vaidas, Aidas, Rokas, Rytis, Domas, Lukas, Jonas, Tadas, Tomas, Nedas, Ignas, Egidijus, Marius, Merūnas, Stasys, Adomas, Kęstutis, Pranas, Darius, Julius, Justas, Juozas, Valdas, Mantas, and Vygandas