RDB

RDB may refer to:

Computing

 * Amiga rigid disk block, describing partition information
 * Oracle Rdb, a relational database product
 * Relational database

Military

 * Cordite RDB, an experimental form of explosive developed for use by the Royal Navy in World War I
 * Kel-Tec RDB, a semi-automatic carbine chambered for 5.56×45mm NATO rounds

Other

 * RDB (band) (RDB Rhythm Dhol Bass), a UK music production group
 * Richard Doll Building, located in Oxford, England
 * State Security Service (RDB), Serbian secret police