Family name אורסיני (Orsini 
, אורסיני 
) , all around the world, is a common cognomen. The last name אורסיני is habitual in Monaco, where it is quite a common surname, Italy, and Malta. Measured by absolute frequency, it is the most numerous in Italy, France, and the United States. Much less frequently, אורסיני is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Orsini | France, Argentina, Italy, Brazil, United States |
| אורסיני | Israel |