BDY or bdy may refer to:
- BDY, the IATA code for Bandon State Airport, Oregon, United States
- BDY, the station code for Bredbury railway station, Greater Manchester, England
- BDY, the station code for Broadway station (LIRR), New York, United States
- bdy, the ISO 639-3 code for Yugambeh–Bundjalung languages, Australia