| Abbreviation | Definition |
|---|---|
| API | Automated Processes Inc |
| API | Automotive Professionals Inc |
| API | Automotive Professionals, Inc. |
| APIC | Asia Pacific Internet Company |
| APICO | Akwa Ibom Property and Investments Company Limited |
| APII | Applied Planning Infrastructure Inc |
| APIL | Absolute Projects India Ltd |
| APIL | Alstom Power India Ltd |
| APIL | Ansal Properties and Infrastructure Ltd |
| APIL | Asian Paints India Ltd |
| APIS | Arbeitsdatei PIOS Innere Sicherheit |
| APIT | Armor Piercing Incendiary Tracer |
| APJ | AOL Platforms Japan |
| APL | Airworthy Productions, L. L. C. |
| APL | Properties Llc |
| APM | Associated Production Music |
| APM | Associated Property Management |
| APMC | AP Manpower Consultants |
| APMI | Advanced Precision Manufacturing Inc |
| APMI | American Precision Manufacturing Inc |