| PM | Pressurized Module | - | Atmospheric Research Center |
| PM | Particulate Matter | - | Computer Acronyms(common) |
| PM | ParaMedic | - | Medical(slang) |
| PM | Phase Modulation | - | Organizations |
| PM | Payload Management | - | Organizations |
| PM | Payload Midbody | - | Organizations |
| PM | Performance Monitor | - | Organizations |
| PM | Phase Modulation | - | Organizations |
| PM | PMAPerformance Monitor Annunciator | - | Organizations |
| PM | PMADPerformance Monitor Annunciation Driver | - | Organizations |
| PM | PMAPPerformance Monitor Annunciation Panel | - | Organizations |
| PM | PMATPage Map Address Table | - | Organizations |
| PM | Power Management And Distribution | - | Organizations |
| PM | Preventive Maintenance | - | Organizations |
| PM | Project Manager | - | Organizations |
| PM | Pulse Modulation | - | Organizations |
| PM | Private Message | - | Sms Text Smileys and Emoticons |
| PM | Private Message | - | ISO Country Codes |
| PM | Personal Message | - | ISO Country Codes |
| PM | Panama (FIPS 10-4 Country Code) -Perry Mason - Phase Modulation - Post Meridiem (Latin After Noon) - Prime Minister - Project Manager -Saint Pierre And Miquelon (ISO 3166 Digram) | - | Astronomy |
| PM | Petametre - Promethium | - | Astronomy |
| PM | Picometre | - | Astronomy |
