Family name سيانو (Siano 
, سيانو, Sianou 
) , all around the world, is quite a common last name. The last name سيانو is habitual in Italy, where it is quite a rare surname, Philippines, and Greece. In absolute terms, it is the most numerous in Italy, Philippines, and the United States. Much less frequently, سيانو is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siano | Italy, Philippines, Brazil, United States, Argentina |
| Sianou | Togo, Democratic Republic of the Congo, Greece, United Kingdom |