Surname ליאוני (Leonie 
, Leoni , ליאוני 
) , all around the world, is a common cognomen. The surname ליאוני is habitual in Italy, where it is quite a common surname, Guadeloupe, and Luxembourg, where it is quite a rare surname. In absolute terms, it is commonest in Italy, Brazil, and Indonesia. More frequently, ליאוני is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leoni, Leonie | Germany, South Africa, Italy, Cameroon, Brazil |
| ליאוני | Israel |