Last name Heff (Heff 
) , in the world, is a rare family name. The surname Heff is habitual in Reunion, where it is quite a common surname, Ireland, where it is a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Reunion, the United States, and Ireland. Much less frequently, Heff is the forename as well as the last name.