Worldwide, كلاوس (Klaus 
, Claus , كلاوس 
) is a widespread masculine first name. The given name كلاوس is habitual in Germany, where it is a widespread male name, Austria, where it is quite a common boy's name, and Denmark (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Germany, Austria, and Brazil. Much less frequently, كلاوس is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Klaus, Claus | Germany, Austria, United States, Denmark, Brazil |
| كلاوس | Iraq |
| Klauss | Germany, Austria, Spain, United States, Brazil |
كلاوس is also a popular name for the fictitious and mythical characters: Klaus Harmony , the musical artist; Klaus Heissler , the character from the animated series American Dad!; Klaus Beimer , the fictional character from Lindenstraße; Klaus Hargreeves , character in The Umbrella Academy and Klaus Baudelaire , the fictional character, Lemony Snicket's A Series of Unfortunate Events, and in many other works.