Family name Бю (Bye 
, Бю 
) , around the globe, is a common last name. The cognomen Бю is characteristic of Norway, where it is quite a common surname, Gabon, where it is quite a rare surname, and Australia. Measured by absolute frequency, it is commonest in the United States, Norway, and the United Kingdom. Much less frequently, Бю is the forename as well as the last name.