KlaasJan

KlaasJan is a Dutch given name, a compound formed from Klaas and Jan. Klaas is a short form of Nicolaas (Nicholas), and Jan is the Dutch form of John. The combination reflects a common Dutch practice of creating two-part given names. KlaasJan is most frequently used in the Netherlands and among Dutch-speaking communities, and it is almost always masculine. The standard spelling in Dutch is Klaas-Jan, though variations such as Klaas Jan or KlaasJan occur in informal writing.

In Dutch naming conventions, compound names are often used to honor relatives or to distinguish individuals with otherwise common given names. When present on official documents, Klaas-Jan is treated as a single first name, rather than as two separate given names.

Notable people with the name include Klaas-Jan Huntelaar (born 1983), a Dutch professional footballer who played as a striker for clubs such as Ajax and Schalke 04 and who has represented the Netherlands national team.

The name KlaasJan is not among the most common Dutch given names today, but it remains in use within contemporary Dutch communities and can be encountered in various Dutch-speaking settings.