Family name Steponavičius (Steponavičius 
, Степонавичюс 
) , across the world, is a rare last name. The family name Steponavičius is characteristic of Lithuania, where it is quite a rare surname, Kazakhstan, where it is a very rare surname, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
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| Steponavičius | United Kingdom, Lithuania |
| Степонавичюс | Kazakhstan, Ukraine |
| jonas steponavičius early 20th c. Lithuanian Roman Catholic priest, LT (b. 1880) |
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alvydas pranas steponavičius Lithuanian architect, LT (b. 1943) |
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| vincas steponavičius Lithuanian actor (1898-1958), LT (b. 1898) |
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| jonas steponavičius Lithuanian Righteous Among the Nations, LT (b. 1902) |
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| kazys steponavičius American violinist and conductor of Lithuanian heritage, LT (b. 1905) |
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| julijonas steponavičius Polish archbishop, PL (b. 1911) |
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| pranas steponavičius (b. 1904) |
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gintaras steponavičius Lithuanian politician, PL (b. 1967) |
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| jonas steponavičius (b. 1907) |
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mindaugas steponavičius Lithuanian military officer, LT (b. 1974) |
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| algirdas steponavičius Lithuanian illustrator, LT (b. 1927) |
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| liudvikas steponavičius LT (b. 1924) |
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| andriejus steponavičius Lithuanian photographer, LT (b. 1937) |
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| zbignevas steponavičius (b. 1934) |
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| algirdas steponavičius LT (b. 1950) |
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Matas, Romanas, Dainius, Edvinas, Emilijus, Ovidijus, Žygimantas, Martynas, Algirdas, Rimantas, Rimvydas, Deividas, Domantas, Giedrius, Vaidotas, Vytautas, Osvaldas, Mindaugas, Deimantas, Gintautas, Tautvydas, Virginijus, Karolis, Aurimas, Artūras, Antanas, Aidas, Rokas, Linas, Lukas, Tomas, Vytas, Ignas, Marius, Mantas, Adomas, Vidmantas, Agnius, Kęstutis, Darius, Laimis, Justas, Tauras, Ugnius, Simonas, Sigitas, Alvydas, Andrius, Kipras, and Valentinas