| Acronym | Meaning |
 | POT | Potentiometer |
| POV | Peak Operating Voltage |
| POV | Pneumatic Operated Valve |
| POWS | Project Operating Work Statement |
| PP | Partial Pressure |
| PP | Planning Package |
| PP | Power Pole |
| PP | Program Performance |
| PP | Push-Pull |
| PPB | Parts Per Billion |
| PPB | Program Performance Baseline |
| PPC | Phased Provisioning Code |
| PPC | PreProcessing Center |
| PPCO2 | Partial Pressure CO2 |
| PPEP | Plasma Physics And Environmental Perturbation |
| PPF | Payload Processing Facility (USAF) |
| PPH | Pounds Per Hour |
| PPI | Plan Position Indicator |
| PPI | Pulse Position Indicator |
| PPIL | Priced Provisioned Item List |
| PPL | Planning Parts List |
| PPL | Priced Parts List |
| PPL | Provisioning Parts List |
| PPM | Part Per Minute |
| PPM | Parts Per Million |
| PPM | Pulse Per Minute |
| PPM | Pulse Position Modulation |
| PPM | EPacific Plate Motion Experiment |
| PPO2 | Oxygen Partial Pressure |
| PPO2 | Partial Pressure 02 |
| PPP | Payload Patch Panel |
| PPP | Peak Pulse Power |
| PPR | Payload Preparation Room |
| PPS | Pneumatic Power Subsystem |
| PPS | Printer/Plotter System |
| PPS | Provisioning Performance Schedule |
| PPS | Pulse Per Second |
| PQGS | Propellant Quantity Gaging System |
| PR | Pair |
| PR | Performance Report |
| PR | PositionRecord |
| PR | Pressure |
| PR | PressureRatio |
| PR | PressureRegulator |
| PR | Primary |
| PR | ProblemReport |
| PR | Procurement Regulation |
| PR | Procurement Requisition |
| PR | PulseRate |
| PR | Purchase Request |
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