PDB
- 1,4-Dichlorobenzene
- Bangladesh Power Development Board
- Chess Problem Database Server
- Oracle Database
- PDB (Palm OS)
- Party of German-speaking Belgians
- Potato dextrose broth
- Pousette-Dart Band
- President's Daily Brief
- Program database
- Promised Day Brigade
- Protein Data Bank
- Protein Data Bank (file format)
- Stepping (debugging)