Surname Баас (Baas 
, Баас 
) , around the globe, is a common last name. The surname Баас is habitual in Netherlands, where it is quite a common surname, Suriname, where it is quite a rare surname, and Namibia. Not in comparison with a country's population, it is the most numerous in Netherlands, the United States, and Germany. Much less frequently, Баас is the forename as well as the last name.