BDR may refer to:
- BD-R or Blu-ray Disc recordable
- Backup Designated Router, a routing protocol concept
- Bangladesh Rifles, now Border Guard Bangladesh, a border guarding force of Bangladesh
- Bilateral Digit Reduction, a concept in paleontology to explain the wing formation in birds
- Bill Davis Racing, a NASCAR team
- German Cycling Federation (Bund Deutscher Radfahrer)
- Sikorsky Memorial Airport (FAA and IATA codes)
- Beck Disaster Recovery, a subsidiary of SAIC
- BroughtDownRunning, a band formally known as "Bus Driver Roy" from Orange County California