What does Claus mean?
Claus \c-laus\ as a boys' name is of German origin. Variant of Nicholas (Greek) "people of victory", representing a short form of Niclaus or Niklaus. The name is associated in America with Santa Claus. Actor Klaus Kinski.
Claus is an uncommonly occurring first name for males but a very prominent last name for all people (#8393 out of 150436, Top 6%). (2000 U.S. Census)
Below is a graphed comparison of the usage of Claus and associated names. Cole (#116 a year ago), Colin (#140), Collin (#223), Nicholas (#57), Niklas and Nils are the popular alternative forms of Claus (#unlisted). These boy names reached the peak of their popularity in the year 2003 (usage of 0.6163%) and are somewhat less popular today (usage 0.5773%, down 6.3%). Cole (#116), Colin (#140) and Collin (#223) are three of the more trendy birth names in this list, with Colin having a resurgence in popularity. (Top 1000 Birth Names Records, 2014)
A recommended similar baby name is Claud. This name tends to be more frequently used than Claus.