Family name Сиана (Siana 
, Syana 
, Сиана 
) , around the globe, is quite a rare surname. The surname Сиана is habitual in Guatemala, where it is quite a rare surname, North Macedonia, where it is a rare surname, and Greece. In absolute terms, this name is the most popular in Indonesia, Guatemala, and India. Likewise, Сиана is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siana | Indonesia, Guatemala, Tanzania, India, Democratic Republic of the Congo |
| Syana | Indonesia, United States, India, Pakistan, Brazil |
| Сиана | Russia, Bulgaria |