1,066births recorded
4Countries
2Variants
2009Peak · Belgium
#482Germany (large cities) 2025
Klaas is a boy name family recorded 1,066 times in 4 countries since 1953. It ranks highest today in Germany's large cities (#482 in 2025). Its all-time peak was in Belgium in 2009, at 39.2 births per 100,000. Elsewhere it is mostly given as Klas (Sweden).
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
Which form wins where
Births per 100,000 newborns for each form, in the selected country.
All forms of Klaas
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Klaas | French | 650 | 🇧🇪 Belgium | #1199 | 2009 | ▼ 65 % |
| Klaas | French | 83 | 🇩🇪 Germany (large cities) | #482 | 2018 | – |
| Klaas | French | 8 | 🇨🇦 Ontario | – | 1953 | – |
| Klas | Swedish | 325 | 🇸🇪 Sweden | #739 | 2000 | ▲ 43 % |
How we grouped these names
- Klaas ↔ Klas — spelling variant
Questions about Klaas
How popular is the name Klaas?
In 2025 it ranked #482 in Germany's large cities. Official registers record 1,066 births across 4 countries.
What is Klaas in other languages?
Klas (Swedish).
When was Klaas most popular?
It peaked in Belgium in 2009, at 39.2 births per 100,000.
Is Klaas a boy or a girl name?
In official birth registers, Klaas is a boy name.