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 | Brazil, France, Algeria, Morocco, Pakistan |
| Zayr | Brazil, Myanmar, India, Mexico, Morocco |
| Зайр | Russia, Ukraine, Kazakhstan, Kyrgyzstan |
| Zajr | Pakistan |