Family name Leosny (Leosny 
) , in the world, is an extremely rare cognomen. The cognomen Leosny is habitual in Latin America and the Caribbean, particularly Venezuela, where it is an extremely rare surname. Predominantly, Leosny is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leosny | Brazil, Venezuela, Democratic Republic of the Congo |