Cognomen Viliūnas (Viliūnas 
) , in all the world, is a very rare family name. The cognomen Viliūnas is habitual in Northern Europe, particularly Lithuania, where it is a rare surname.
| vaidotas viliūnas Lithuanian university teacher, LT (b. 1956) |
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| giedrius viliūnas LT (b. 1963) |
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