| Abbreviation | Definition |
|---|---|
| PHARM | Predictive Health and Reliability Management |
| PHAS | Payload Module |
| PHCF | Pituitary Growth Hormone Cell Function |
| PHF | Payload Handling Fixture |
| PHF | Personal Hygiene Facility |
| PHK | Personal Hygiene Kit |
| PHM | Per Hundred Million |
| PHMC | Probe Heater Motor Controller |
| PHOTO | Photograph |
| PHOTO | PHOTOgraphy |
| PHOTO | Photography of Mexico |
| PHOTONS | Photometric Thermospheric Oxygen Nightglow Study |
| PHP | Payload Handling Panel |
| PHR | Payload Hazardous Report |
| PHS | Payload Handling Station |
| PHSF | Payload Hazardous Servicing Facility |
| PHSF | Payload Hazardous Servicing Facility (KSC) |
| PI | Payload Interrogator |
| PI | Pen and Ink (Document Update) |
| PI | Preliminary Investigation |