Surname Büst (Busto 
, Bustum 
, Buste 
) , in the world, is a common last name. The last name Büst is characteristic of Latin America and the Caribbean, particularly Argentina, where it is quite a common surname, Nicaragua, and Paraguay. Measured by absolute frequency, this name is the most popular in Argentina, Philippines, and Spain. Very seldom, Büst is the forename as well as the last name.