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Cognomen Baiar (Баяр
, Baiar
, Байар
) , throughout the world, is a rare family name. The cognomen Baiar is habitual in Armenia, where it is a rare surname, Belarus, and Georgia. In absolute terms, it is commonest in Russia, India, and Armenia. Likewise, Baiar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Баяр | Russia, Kyrgyzstan, Belarus, Armenia, Ukraine |
| Baiar | Georgia, Brazil, India, France, United States |
| Байар | Belarus, Kyrgyzstan, Russia, Ukraine |