HDB may refer to:
Organizations
- Housing and Development Bank, an Egyptian bank
- Housing & Development Board, a statutory board of the Singaporean government
- HDB/Cram and Ferguson, an architectural firm in Boston
Places
- Heidelberg railway station (rail station code: HDB), Heidelberg, Melbourne, Victoria, Australia
- Heidelberg Airport (ICAO airport code: EDIU; German airport code: HDB), Heidelberg, Germany; see List of airports by ICAO code: E
- HDB Hub, Singapore, Singapore
Computing
- HDB3, a digital telecommunications code
- D-subminiature high density B-sized connector
- HDB-15, a video connector
- /dev/hdb, a device file for accessing computer storage
- Altibase HDB, a database engine made by Altibase, called HDB
Other uses
- The Himalayan Database, a Nepalese Himalayas data archive
