Klaus

Klaus is a masculine given name of German origin, commonly used in German-speaking countries. The name is a diminutive form of Nikolaus, which derives from the Greek name Nikolaos meaning "victory of the people" (from "nike" meaning victory and "laos" meaning people). Klaus emerged as an independent given name during the medieval period in German-speaking regions.

In German-speaking countries, Klaus has been a popular given name throughout the 20th century. The name carries variations across different languages, including Claus, Klaas, and Nicola. Several notable historical and contemporary figures bear this name, including physicist Klaus von Klitzing, former German Chancellor Helmut Kohl (born Helmut Josef Michael Kohl, though commonly referred to by his surname), and author Klaus Mann.

In folklore and popular culture, Klaus is sometimes associated with Santa Claus, particularly in European Christmas traditions where Saint Nicholas (Sankt Nikolaus) plays a significant role. The name has also appeared in various literary works, films, and television series as both surnames and given names.

According to demographic data, the popularity of Klaus as a given name has declined in recent decades in Germany, though it maintains cultural significance and recognition across German-speaking regions. The name continues to be used both as a formal given name and as a nickname for those named Nikolaus.