Cognomen Зайр (Zair 
, Zayr 
, Зайр 
) , in the entire world, is quite a common last name. The last name Зайр is habitual in Algeria, where it is quite a rare surname, Morocco, and Syria. Measured by absolute frequency, it is commonest in Algeria, Morocco, and Pakistan. Also, Зайр is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Zair | Morocco, Algeria, Pakistan, France, Brazil |
| Zayr | Morocco, Mexico, India, Myanmar, Brazil |
| Зайр | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| Zajr | Pakistan |