| Abbreviation | Definition |
|---|---|
| APGM | Armored Piercing (or Autonomous Precision) Guided Munition |
| APHC | Army Public Health Center |
| APHE | Armor-Piercing High Explosive |
| APHT | Advanced Physical Test |
| API | Accountable Property Inventory |
| API | After Project Initiation |
| API | Application Programming Interface |
| API | Armor Piercing Incendiary |
| API | Aviation Preflight Indoctrination |
| APIA | Acquisition Policy, Integrity, And Accountability |
| APIC | Allied Press Information Center |
| APIC | Army Performance Improvement Criteria |
| APICM | Anti- Personnel Improved Conventional Munition |
| APICM | Anti-Personnel Improved Conventional Munition |
| APIU | Adaptive Programmable Interface Unit |
| APJ | Aerospace Power Journal |
| APL | Aiming Post Light |
| APL | Allowance Parts List |
| APL | Anti-Personnel Land mine |
| APL | Assistant Patrol Leader |