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; IATA code: HDB), Heidelberg, Germany HDB Hub, Singapore, Singapore

Computing HDB3, a digital telecommunications code D-subminiature high density B-sized connector HDB-15, a video connector , 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 HDB, hot dog and bun, used in competitive eating contests such as Nathan's Hot Dog Eating Contest

See also