PDT
- 1,3-Propanedithiol
- Eastern Oregon Regional Airport
- PDT Partners
- PDT Standard
- PDT violation
- PHP Development Tools
- Pacific Daylight Time
- Pancreas transplantation
- Paramount Domestic Television
- Partido Democrático Trabalhista
- Patient-delivered therapy
- Pattern day trading
- Peter Dengate Thrush
- Phi Delta Theta
- Photodynamic therapy
- Piedmont Airlines
- Plautdietsch
- Please Don't Tell
- Population doubling time
- Portable data terminal
- Potentially dangerous taxpayer
- Prague Dependency Treebank