Cognomen Сайра (Sayra 
, Saira , Zaira 
) , worldwide, is a common last name. The cognomen Сайра is habitual in Georgia, where it is a common surname, Honduras, where it is quite a common surname, and Nicaragua (explore the name in all countries). Measured by absolute frequency, it is commonest in Mexico, Georgia, and Honduras. More prevalently, Сайра is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sayra, Saira | Mexico, India, Pakistan, Brazil, Democratic Republic of the Congo |
| Zaira | Mexico, Honduras, India, Pakistan, Brazil |
| Сайра | Kazakhstan, Armenia, Russia, Kyrgyzstan, Belarus |