Family name באי (Baye 
, Bai 
, באי 
) , in the world, is a prevalent surname. The surname באי is characteristic of 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). Not in comparison with a country's population, this name is the most popular in India, China, and Ethiopia. Much less frequently, באי is the forename as well as the last name.