| Abbreviation | Definition |
|---|---|
| PTO | Process Time Out |
| PTP | Program Tape Preparation |
| PTP | Programming The Psychodrill |
| PTPP | Peer-To-Peer Printing |
| PTR | PoinTeR |
| PTR | Printer |
| PTS | Pivot Table Services |
| PU | Pen Up |
| PU | Physical Unit |
| PUB | Physical Unit Block |
| PUD | Planned Unit Development |
| PUF | Palm User Friendly |
| PUG | Palm Users Group |
| PUG | Pentax Users Gallery |
| PUG | Polycom User Group |
| PUP | Particularly Underpowered Processor |
| PUP | Principal User Platform |
| PUP | Printer Utility Program |
| PUQ | Power User Questionnaire |
| PUR | Pile Up Rejection |