Surname נול (Noll 
, Knoll , Nool 
) , throughout the world, is a common last name. The last name נול is characteristic of Germany, where it is quite a common surname, Austria, and Hungary (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Germany, the United States, and Austria. Very seldom, נול is the forename as well as the last name.