Last name Булл (Bull 
, Bul , Булл 
) , throughout the world, is a common surname. The surname Булл is characteristic of Northern Europe, particularly Jersey, where it is quite a common surname, Norway, and Isle of Man (explore the name in all countries). Measured by absolute frequency, it is commonest in the United Kingdom, the United States, and Australia. Much less frequently, Булл is the forename as well as the last name.