Family name Ризер (Ryser 
, Rizer 
, Ризер 
) , worldwide, is quite a common last name. The last name Ризер is habitual in Switzerland, where it is quite a common surname, the United States, where it is a rare surname, and Denmark. Not in comparison with a country's population, it is the most numerous in Switzerland, the United States, and France. Very seldom, Ризер is the forename as well as the last name.