BAN may refer to:
- Balinese language, ISO 639 alpha-3, "ban"
- Bangladesh at the Olympics, IOC country code
- Basel Action Network
- Basongo Airport, IATA airport code, in the Democratic Republic of the Congo
- Body Area Network
- British Approved Name, for a pharmaceutical substance
- Burrows–Abadi–Needham logic, BAN logic, used to analyse authentication protocols
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