Family name ラスムス (Rasmus 
, ラスムス) , globally, is quite a rare surname. The cognomen ラスムス is habitual in Northern Europe, particularly Finland, where it is quite a rare surname, Norway, and Denmark. Measured by absolute frequency, this name is the most popular in the United States, Finland, and Germany. More prevalently, ラスムス is the forename as well as the last name.