Surname Mesonis (Mesonis 
) , across the world, is a very rare family name. The cognomen Mesonis is characteristic of Lithuania, where it is a rare surname, and Venezuela, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mesonis | Lithuania, Venezuela |
| gediminas mesonis Lithuanian university teacher and judge, LT (b. 1968) |
|