Throughout the world, Aleksas (Aleksas 
, Алексас 
) is a rare boy's first name. The forename Aleksas is habitual in Lithuania, where it is quite a common boy's name, the United Kingdom, where it is a very rare masculine name, and Russia, where it is an extremely rare masculine name. Not in comparison with a country's population, it most frequently occurs in Lithuania, the United States, and the United Kingdom. Much less frequently, Aleksas is the last name as well as the forename.
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| Aleksas | Sweden, United Kingdom, United States, Latvia, Lithuania |
| Алексас | Kazakhstan, Russia, Ukraine |
| aleksas ii kalleas (b. 50) |
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| aleksas jacevičius (b. 1885) |
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| aleksas ambrose (b. 1892) |
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| aleksas šimkūnas Lithuanian actor, LT (b. 1908) |
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| aleksas mrozinskas Lithuanian composer, LT (b. 1914) |
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| aleksas povilaitis (b. 1913) |
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| aleksas baltrūnas Lithuanian writer (1925-2001), LT (b. 1925) |
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| aleksas ražanauskas LT (b. 1915) |
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| aleksas jonkus LT (b. 1915) |
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| aleksas ambrozaitis LT (b. 1916) |
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| aleksas malakauskas LT (b. 1923) |
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| aleksas dabulskis Lithuanian poet (1934-2020), LT (b. 1934) |
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| aleksas garunkštis (b. 1928) |
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| aleksas bartnikas Lithuanian pedagogue, LT (b. 1944) |
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| aleksas stanislovas girdenis LT (b. 1937) |
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Nu, Ibenskis, Matvekas, Modestas, Savickas, Sugintas, Bagdonas, Pozemkauskas, Pielikis, Baravykas, Barauskas, Kisielius, Krasauskas, Kreišmonas, Ragauskas, Dubinskas, Liutvinas, Jankauskas, Vaitkunas, Aleksiūnas, Švenčionis, Malinauskas, Vitenas, Malachovskis, Jakstas, Kiršys, Ale, Ius, Byla, King, Gert, Monas, Kekys, Rymas, Varna, Mockus, Mickus, Kirkus, Rimkus, Dapkus, Grodis, Jonika, Juskys, Hauser, Mazukna, Mitrius, Baipsys, Krauklys, and Bagdonavicius