Cognomen Зая (Zaya 
, Zaia 
, Зая 
) , around the world, is a common surname. The cognomen Зая is characteristic of Mongolia, where it is quite a common surname, Myanmar, and Albania. Measured by absolute frequency, it most frequently occurs in Myanmar, Mongolia, and Argentina. Likewise, Зая is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Zaya | Brazil, United States, Argentina, Myanmar, Mongolia |
| Zaia | Italy, United States, Argentina, Myanmar, Brazil |
| Зая | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Zaja | Italy, United States, Argentina, Brazil, Albania |