BYN may refer to:
- Bayankhongor Airport, Mongolia: IATA airport code BYN
- Belarusian ruble, by ISO 4217 currency code
- Bilen language: ISO language code BYN
- Bryan (Amtrak station), Ohio, United States: Amtrak station code BYN
- Bryn railway station, England, United Kingdom: National Rail station code BYN
This disambiguation page lists articles associated with the title BYN.
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