| Acronym | Meaning |
| PDT | Partido Democrático Trabalhista (Portuguese: Labor Democratic Party; Brazil) |
| PDT | Passive Doppler Tracking |
| PDT | Performance Demonstration Test |
| PDT | Piedmont Airlines (ICAO code) |
| PDT | Port Data Table |
| PDT | Predeployment Training |
| PDT | Primary Designated Target |
| PDT | Procurement Development Team (NASA) |
| PDT | Product Delivery Team |
| PDT | Professional Development Training |
| PDT | Programmable Data Terminal |
| PDT | Project Delivery Team (Army Corps of Engineers) |
| PDT | Proliferation Detection Technology |
| PDT | Provisioning Technical Data |
| PDT | Pulse Doppler Transmitter / Transmission |