Last name Gramu (Gram 
, Gramu 
) , in the entire world, is quite a common surname. The last name Gramu is habitual in Denmark, where it is quite a common surname, Norway, where it is quite a rare surname, and Austria. Not in comparison with a country's population, it is the most numerous in Denmark, the United States, and India. Much less frequently, Gramu is the forename as well as the last name.