Cognomen フェアバーン (フェアバーン 
, Fairbairn 
) , across the world, is quite a common surname. The cognomen フェアバーン is habitual in Isle of Man, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and New Zealand. Not in comparison with a country's population, it is the most numerous in the United Kingdom, the United States, and Australia.
| VARIANT | COUNTRY |
|---|---|
| フェアバーン | Japan |
| Fairbairn | Australia, United Kingdom, Canada, United States, New Zealand |