Surname Bucionis (Bucionis 
) , in the world, is a very rare cognomen. The family name Bucionis is habitual in Lithuania, where it is a rare surname, Canada, where it is an extremely rare surname, and Brazil. Measured by absolute frequency, this name is the most popular in Lithuania, Brazil, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Bucionis | Brazil, Canada, United States, Lithuania |