Which ISO standard establishes international currency codes?

The ISO standard that establishes international currency codes is ISO 4217. This standard was developed by the International Organization for Standardization (ISO) to provide a universally accepted system for indicating currency names and their three-letter codes. Each currency is represented by a unique three-letter code, which helps to prevent confusion and ensure consistency in international financial transactions.

For instance, the United States Dollar is denoted as USD, while the Euro is represented as EUR. The use of these standardized codes is crucial for global trade and finance, as they facilitate clear communication between parties from different countries and minimize the risk of errors in currency conversion and transactions.

In contrast, the other options relate to different aspects of standardization. ISO 6166 pertains to securities (specifically International Securities Identification Numbers or ISINs), ISO 10383 is focused on the identification of stock exchanges, and ISO 15022 deals with financial services messaging and is related to the exchange of data in securities transactions. Each of these standards serves a specific purpose but does not establish currency codes like ISO 4217 does.