Surname سياني (Siani 
, Ciani 
, سياني 
) , around the world, is a common cognomen. The last name سياني is characteristic of Italy, where it is quite a common surname, Cameroon, and Israel, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Italy, Cameroon, and Argentina. Much less frequently, سياني is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siani | Argentina, Italy, Cameroon, United States, Indonesia |
| Ciani | France, Argentina, Italy, United States, Indonesia |
| سياني | Yemen, Saudi Arabia, Iran |