Last name バイ (Bai 
, Bye , バイ 
) , around the world, is a prevalent surname. The family name バイ is habitual in India, where it is a widespread surname, Cayman Islands, where it is a common surname, and China, where it is quite a common surname (explore the name in all countries). Measured by absolute frequency, it is commonest in India, China, and Pakistan.
| VARIANT | COUNTRY |
|---|---|
| Bye, Bai | China, Saudi Arabia, United States, India, Pakistan |
| バイ | Japan |
| Bayh | Germany, Ethiopia, Morocco, United States, France |