国际银行帐户号码（International Bank Account Number，简称IBAN）是银行在国际之间互相定立的，各国各银行的标识号码，可降低国际间金融操作的失误。它最初是由欧洲银行标准委员会（ECBS）通过，后来被采纳为国际标准ISO 13616:1997。目前的标准是ISO 13616:2007，表明SWIFT代码（ISO 9362）为正式的格式。最初开发是为了促进欧盟范围内的支付，但现在也已经实施到大多数欧洲国家和其他国家，尤其是在中东和加勒比海地区。IBAN最多包含34个字母和数字字符：首先的两个字母是ISO3166-1α-2国家代码，然后两个校验位，最后一个是特定国家的基本银行帐户号码（BBAN）。校验位使检查完整性。BBAN格式的决定是由每个国家的银行界的约束下，它必须是一个固定长度的不区分大小写的字母数字字符。它包括国内银行账户号码，银行分行的号码，和潜在的路由信息。

The International Bank Account Number (IBAN) is an internationally agreed system of identifying bank accounts across national borders to facilitate the communication and processing of cross border transactions with a reduced risk of transcription errors. It was originally adopted by the European Committee for Banking Standards (ECBS), and later as an international standard under ISO 13616:1997. The current standard is ISO 13616:2007, which indicates SWIFT as the formal registrar. Initially developed to facilitate payments within the European Union, it has been implemented by most European countries and many countries in the other parts of the world, especially in the Middle East and in the Caribbean. As of February 2016, 69 countries were using the IBAN numbering system.