Surname Сайана (Sajana 
, Sayana 
, Saiana 
) , in the entire world, is quite a rare last name. The cognomen Сайана is characteristic of Botswana, where it is quite a rare surname, Laos, and Kuwait, where it is a rare surname. Measured by absolute frequency, this name is the most popular in India, Philippines, and Indonesia. More prevalently, Сайана is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sajana | Nepal, India, Sri Lanka, United Arab Emirates, Indonesia |
| Sayana | Philippines, Indonesia, India, United Arab Emirates, Democratic Republic of the Congo |
| Saiana | Brazil, Malaysia, India, United States, Russia |
| Сайана | Russia |