CZK stands for Czech Koruna, which is the official currency of the Czech Republic. The CZK is abbreviated as “Kč” and is subdivided into smaller units called haléř or haléře. The currency is issued by the Czech National Bank and is commonly used in the Czech Republic for transactions involving goods and services. The Czech Republic is a member of the European Union but has not yet adopted the euro as its official currency, so the CZK remains the primary currency in the country.