Cognomen Грофф (Groff 
, Грофф 
, Grooff 
) , all over the world, is a common last name. The last name Грофф is characteristic of Luxembourg, where it is quite a common surname, Slovenia, where it is quite a rare surname, and the United States. In absolute terms, this name is the most popular in the United States, Brazil, and France. Much less frequently, Грофф is the forename as well as the last name.