Cognomen بايرو (Bayero 
, Bairo 
, Bayrou 
) , in all the world, is quite a common surname. The family name بايرو is habitual in Nigeria, where it is quite a rare surname, Cameroon, and Uruguay. In absolute terms, it is commonest in Nigeria, Cameroon, and France. Likewise, بايرو is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bayero | Cameroon, Nigeria, United States, France, Venezuela |
| Bairo | Japan, Nigeria, Tanzania, France, Brazil |
| Bayrou | Switzerland, France |