Last name Boir (Боир 
, Boir 
) , around the world, is a rare cognomen. The family name Boir is characteristic of Kyrgyzstan, where it is a very rare surname, France, and India. Very seldom, Boir is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Боир | Belarus, Kyrgyzstan, Russia |
| Boir | United States, India, France |