SDB or sdb may refer to:
Places Air Force Base Langebaanweg (IATA airport code SDB), Western Cape, South Africa Sandbach railway station (station code SDB), Sandbach, Cheshire, England, UK Shahabad railway station (station code SDB), Kalaburagi, Karnataka, India Sønderborg railway station (station code Sdb), Sønderborg, Southern Jutland, Denmark; see List of railway stations in Denmark
People Sébastien de Brossard (1655–1739; musicology abbreviation: SdB), French composer and musician S. D. B., post-nominal letters for members of the Salesians of Don Bosco Roman catholic order
Groups, companies, organizations Shoreline Aviation (ICAO airline code SDB), a U.S. charter airline SDB bank, a Sri Lankan bank SDB, a Russian aircraft manufacturer, who make the SDB Karat
Salesians of Don Bosco, a Roman Catholic religious order School for the Deaf and Blind, Philippines; former name of the Philippine School for the Deaf Seventh Day Baptist, a Christian denomination Society for Developmental Biology Special Design Bureau (; ), a type of Soviet bureau, a form of sharashka () R&D lab
Sukhoi Design Bureau, Soviet Union; an aircraft manufacturer Surat Diamond Bourse, Surat, Gujarat, India; a diamond trading centre
Social Democratic League (SDB; ), a Dutch socialist political party State Security Administration (SDB; ), Yugoslav secret police Serbian State Security (SDB; ), a WWII Serbian-collaborationist German-occupation bureau in charge of the Serbian State Guard (SDS; ) State Security Service (SDB; ), Serbian secret police Serbian State-Building Bloc (SDB; ), a political coalition in Serbia
Military GBU-39 Small Diameter Bomb, guided bomb GBU-53/B StormBreaker Small Diameter Bomb II (SDB II) Service Dress Blue (SDB), a uniform of the United States Navy Seaward Defence Boat 2 Special Service Battalion (2. SDB; ), South African Army Myasishchev M-4, the ()
Other uses Subdwarf B star (sdB), a type of astronomical star /dev/sdb, the second SCSI, SATA or USB disk Shabaki language (ISO 639 language code sdb) sleep-disorder breathing (SDB), a disorder related to sleepwalking
See also