Family name Aivaras (Aivaras 
, Айварас 
) , all over the world, is a very rare last name. The family name Aivaras is characteristic of Lithuania, where it is quite a rare surname, Belarus, where it is a rare surname, and Ukraine, where it is an extremely rare surname. Much more prevalently, Aivaras is the forename as well as the last name.
Nas, Žukauskas, Sokolovas, Ciurinskas, Balciunas, Lapinskas, Lukošius, Jankauskas, Zukauskas, Miliauskas, Aksionovas, Bardauskas, Kazlauskas, Paulauskas, Domininkaitis, Mikalauskas, Andrijauskas, Baranauskas, Kavaliauskas, Tomkevicius, Stankevicius, Kvietkauskas, Nesvarbu, Vasiliauskas, Navickas, Karalius, Ius, Rudis, Rudys, Dirse, Jocys, Ilgas, Mockus, Mickus, Butkus, Klimas, Pocius, Rimkus, Norkus, Macikas, Maconko, Pekorius, Demikis, Grisius, Jakunas, Morkunas, Bagdonas, Grigonis, and Urbanavicius