Czech Koruna (CZK) is a current ISO 4217 currency code published by the SIX Group maintenance agency in List One.
- Currency code: CZK
- Numeric code: 203
- Currency name: Czech Koruna
- Minor units: 2
- Entity: CZECHIA
- List: ISO 4217 List One (current currency codes)
- List published: 2026-09-17