Last name ورم (Worm 
, ورم 
) , all over the world, is quite a common surname. The cognomen ورم is habitual in Denmark, where it is quite a common surname, Germany, where it is quite a rare surname, and Netherlands. Measured by absolute frequency, it is the most numerous in Germany, the United States, and Denmark. Very seldom, ورم is the forename as well as the last name.