BAN may refer to: Balinese language (ISO 639 alpha-3, "ban") Bangladesh at the Olympics (IOC country code) Basel Action Network Biblioteka Akademii Nauk, the Library of the Russian Academy of Sciences Body Area Network British Approved Name Bulgarian Academy of Sciences Burrows-Abadi-Needham logic Billing Account Number BAN - Best Asymptotically Normal Burrows–Abadi–Needham logic (BAN logic) used to analyse authentication protocols… (More on Ban)