Cognomen מריאני (Mariani 
, מריאני 
) , in the world, is a common last name. The surname מריאני is characteristic of Italy, where it is quite a common surname, Aland Islands, and Argentina (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Italy, Indonesia, and Argentina. Very seldom, מריאני is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mariani | Indonesia, Italy, United States, Argentina, Brazil |
| מריאני | Israel |