Family name בייר (Beyer 
, Baier , Bier ) , in all the world, is a widespread last name. The cognomen בייר is characteristic of Marshall Islands, where it is a common surname, Germany, where it is quite a common surname, and Austria (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Germany, the United States, and Austria. Much less frequently, בייר is the forename as well as the last name.