KDB may refer to:
Sport Kevin De Bruyne
Organizations Kansas Dental Board, US Korea Development Bank State Security Committee of the Republic of Belarus Committee for State Security, of Soviet Ukraine
Computing Kdb+, a database server KDB, a Linux kernel debugger
Transport Kambalda Airport, IATA airport code "KDB" Kidbrooke railway station, London, England (National Rail station code)
Other uses KDB (FM), a radio station, Santa Barbara, California, US KDB (Brunei) (Royal Brunei Ship), ship prefix Kevin De Bruyne, Belgian footballer Kirby's Dream Buffet, a 2022 party game
See also Beechcraft MQM-61 Cardinal, a target drone, formerly KDB-1