| Abbreviation | Definition |
|---|---|
| PSW | PrimeSource Web |
| PSX | Play Station eXtreme |
| PT | Picture Title |
| PT | Publication Type |
| PTB | Photonics Tech Briefs |
| PTB | Punjab TextBook Board |
| PTC | Parent's Television Council |
| PTC | Prime Time Country |
| PTDM | Professional Tools for Digital Media |
| PTE | Post Truth Era |
| PTEN | Prime Time Entertainment Network |
| PTH | Photogenic Tilting Handle |
| PTI | Press Trust of India |
| PTI | Publication Television And Internet |
| PTN | Photo Trade News |
| PTN | Photo Traveler Newsletter |
| PTO | Please Turn Over |
| PTP | Port Townsend Paper |
| PTPG | Professional Travel Planners Guide |
| PTPN | Poznanskie Towarzstwo Przyjaciol Nauk (publication) |