Family name ארהרד (Erhard 
, Erhards 
, ארהרד 
) , around the world, is quite a common surname. The last name ארהרד is habitual in Western Europe, particularly Germany, where it is quite a rare surname, Austria, and Switzerland. Not in comparison with a country's population, it is commonest in Germany, the United States, and France. More frequently, ארהרד is the forename as well as the last name.