Last name Gaidamavičius (Gaidamavičius 
) , around the globe, is a very rare cognomen. The family name Gaidamavičius is habitual in Northern Europe, particularly Lithuania, where it is quite a rare surname.
| zigmas gaidamavičius LT (b. 1920) |
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| vytautas gaidamavičius Lithuanian pianist and university teacher (1931-2008), LT (b. 1931) |
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| stasys gaidamavičius LT (b. 1947) |
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| juozas gaidamavičius (b. 1954) |
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| tomas gaidamavičius Lithuanian basketball player, LT (b. 1982) |
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