Family name バウム (Baum 
, バウム) , globally, is a common last name. The last name バウム is habitual in Western Europe, particularly Germany, where it is quite a common surname, Luxembourg, and Austria, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Brazil. Very seldom, バウム is the forename as well as the last name.