What does Klaas mean?
Klaas /klaas/ as a name for boys is of Greek derivation, and the meaning of the name Klaas is "people of victory". Klaas is an alternate spelling of Klaus: transcription of Claus. Klaas is also a form of Nicholas (Greek).
How popular is Klaas?
Klaas is an uncommonly occurring first name for males but a very prominent last name for all people (#20711 out of 150436, Top 14%). (2000 U.S. Census)
The only popular alternative form of Klaas (not ranked) is Nicholas (#57 via latest list). This relation of Klaas was popular with parents in the year 1999 (usage of 0.995%) and has become much less common since (usage 0.943%, 5.2% less). Displayed below is a comparison of the usage of the boy name Klaas and related names. (Top Birth Names, 2014)