Last name Грут (Grut 
, Грут 
) , across the world, is a rare family name. The last name Грут is habitual in Northern Europe, particularly Norway, where it is quite a rare surname, Sweden, and Denmark, where it is a rare surname. Measured by absolute frequency, this name is the most popular in France, Sweden, and Norway. Very seldom, Грут is the forename as well as the last name.