Family name Balchyunas (Balchyunas 
, Бальчюнас 
) , all over the world, is a very rare cognomen. The family name Balchyunas is characteristic of Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Russia, Belarus, and Ukraine.