OPD
OPD is an abbreviation for:
- Oberpostdirektion
- Open Parliamentary Debate, a Debattierformat
- Operationalized psychodynamic diagnostics
- Ozone depletion potential; Ozone depletion potential
- Organic photodetector
- Ortho -phenylene diamine, an aromatic nitrogen compound
- A file format the text recognition software OmniPage
- Disambiguation
- Abbreviation