Surname Matthaus (ماثيوس 
, Matthaus 
, ماتيوس ) , all over the world, is a rare last name. The cognomen Matthaus is characteristic of Serbia, where it is quite a rare surname, Switzerland, where it is a rare surname, and Palestinian Territory. Not in comparison with a country's population, it is the most numerous in Serbia, Russia, and Germany. More frequently, Matthaus is the forename as well as the last name.