Surname Búi (Bo 
, Búi 
) , all over the world, is a widespread family name. The cognomen Búi is habitual in Myanmar, where it is a common surname, Mongolia, where it is quite a common surname, and Norway (explore the name in all countries). Not in comparison with a country's population, the name is most common in Myanmar, China, and Egypt. More frequently, Búi is the forename as well as the last name.