AUD

ISO 4217 is the global standard for representing currencies in software, financial messaging, and international trade. The three-letter currency code—such as AUD— is designed to be unambiguous across languages and regions, which makes it ideal for APIs, databases, payment processors, and reporting pipelines. Numeric currency codes complement the letter codes in systems that prefer fixed-width digits or need a stable identifier that is independent of localization.

Using ISO 4217 codes consistently helps prevent subtle but costly bugs. For example, a currency symbol like $ can refer to multiple currencies, while the code USD, CAD, or AUD makes the intended meaning explicit. Global products often combine ISO 4217 codes with ISO country codes and international calling codes to model identity, geography, and pricing accurately. This page pairs the ISO 4217 details for AUD with the countries that use it so you can design money flows that are predictable, auditable, and ready for worldwide scale.