| Abbreviation | Definition |
|---|---|
| APIL | Advocates for Public Interest Law |
| APIL | Alstom Projects India Limited |
| APIM | Actor Partner Interdependence Model |
| APIM | AI Processing In Memory |
| APIM | Alpine Permafrost Index Map |
| APIM | ARINC Project Initiation Modification |
| APIMS | Advanced Profiling Inspection And Metrology System |
| APIMS | Atmospheric Pressure Ionisation Mass Spectrometer |
| APIMS | Atmospheric Pressure Ionization Mass Spectrometer |
| APIMS | Atmospheric Pressure Ionization Mass Spectroscopy |
| APINA | Automagic People Image Naked Archive |
| APINA | Automatic People Image Naked Archive |
| APIO | A Philosophical Interpretation Of |
| APIO | Asian Pacific Islander Organization |
| APIOS | Acid Precipitation In Ontario Study |
| APIP | Accessible Portable Item Protocol |
| APIP | Adobe Product Improvement Program |
| APIP | Advanced Placement Incentive Program |
| APIP | Annual Parent Information Packet |
| APIP | Another Pairing Implementation in PARI |