Cognomen Mazionis (Mazionis 
) , in all the world, is a very rare family name. The last name Mazionis is habitual in Northern Europe, particularly Lithuania, where it is quite a rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Mazionis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mazionis | Lithuania, United Kingdom |