Across the world, Kazimieras (Kazimieras 
, Казимерас 
, Казимиерас ) is a rare boy's forename. The first name Kazimieras is habitual in Lithuania, where it is quite a common male name, Kazakhstan, where it is a rare boy's name, and Russia, where it is a very rare boy's name. Very seldom, Kazimieras is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kazimieras | Sweden, Brazil, United States, United Kingdom, Lithuania |
| Казимерас | Ukraine, Russia, Lithuania, Kazakhstan |
| Казимиерас | Russia |
| Казімерас | Ukraine |
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kazimieras mykolas pacas (b. 1655) |
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kazimieras aleksandras pociejus (1666-1728) (b. 1666) |
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| kazimieras kojelavičius-vijūkas LT (b. 1617) |
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| kazimieras frackevičius-radziminskis LT (b. 1638) |
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| kazimieras tiškevičius (b. 1640) |
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| kazimieras tiškevičius logoiskis (b. 1650) |
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| kazimieras bžozovskis LT (b. 1687) |
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| kazimieras juraga-giedraitis BY (b. 1700) |
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| kazimieras skuminas tiškevičius (b. 1729) |
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| kazimieras adomas naruševičius (b. 1730) |
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| kazimieras kognovickis LT (b. 1746) |
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kazimieras citavičius Polish landowner, military officer, January Uprising participant, LT (b. 1841) |
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| kazimieras kristupas daukša Lithuanian linguist and teacher, LT (b. 1795) |
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| kazimieras dalenas (b. 1802) |
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kazimieras pakalniškis Lithuanian writer, LT (b. 1866) |
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Ka, Andrulis, Griskaitis, Tauginas, Šliužas, Murauskas, Cesnulevicius, Baczinskas, Kundrotas, Gurauskas, Lazauskas, Lisauskas, Zukauskas, Žižliauskas, Baliukonis, Kavaliunas, Kazlauskas, Rutkauskas, Dzidzevicius, Jablonskas, Mikelevičius, Kavaliauskas, Skatikas, Soliunas, Zalunas, Latakas, Kus, Nas, Ius, Tucas, Momkus, Aleksa, Ašoklis, Kizlauskas, Razmus, Domkus, Krevnevicius, Gaulia, Joseph, Žilys, Meilius, Mikelis, Susmara, Stonkus, Aliulis, Celiešius, Badokas, Kniuksta, Gircys, and Urbonavicius