Last name Vaičiulionis (Vaičiulionis 
) , in all the world, is a very rare family name. The surname Vaičiulionis is characteristic of Northern Europe, particularly Lithuania, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Vaičiulionis | Lithuania |
| lionginas vaičiulionis Lithuanian Esperantist, LT (b. 1931) |
|
|
| sigitas vaičiulionis LT (b. 1948) |
|