Cognomen Šimėnas (Šimėnas 
, Шименас 
) , around the globe, is a very rare surname. The cognomen Šimėnas is characteristic of Lithuania, where it is quite a rare surname, and Ukraine, where it is a very rare surname.
| albertas šimėnas Prime Minister of Linthuania, LT (b. 1950) |
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| jonas šimėnas Lithuanian politician, LT (b. 1953) |
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| valdemaras šimėnas LT (b. 1954) |
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| mantas šimėnas researcher |
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| raivydas šimėnas Ph.D. Vilniaus universitetas 2016 |
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