Last name Reihard (Reihard 
) , throughout the world, is a very rare surname. The last name Reihard is habitual in Croatia, where it is a very rare surname, Germany, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in the United States, Germany, and Mexico. Also, Reihard is the forename as well as the last name.