Family name Biliūnaitė (Biliūnaitė 
) , all over the world, is a very rare cognomen. The last name Biliūnaitė is characteristic of Northern Europe, particularly Lithuania, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Biliūnaitė | Lithuania |
| anelė biliūnaitė LT (b. 1940) |
|
|
| martyna biliūnaitė Lithuanian cross-country skier, LT (b. 1999) |
|