PTD
- .NET Framework
- Administrative and Diplomatic Officer
- Civil service in Malaysia
- PTD-DBM
- Participatory technology development
- Pathfinder Technology Demonstrator
- Peak–trough difference
- Poloidal–toroidal decomposition
- Post travel depression
- Potsdam Municipal Airport
- Pre-trial diversion
- Prevention through design
- Protected trust deed
- Total permanent disability insurance