| Abbreviation | Definition |
|---|---|
| APIP | Asia Pacific Information Platform |
| APIP | Asia Pacific Infrastructure Partnership |
| APIP | Atomic Processes in Plasmas |
| APIPA | Arizona Physicians Independent Practice Association |
| APIPA | Asia Pacific Intellectual Property Association |
| APIPA | Association of Pacific Island Public Auditors |
| APIPA | Association of Pacific Islands Public Auditors |
| APIPA | Automatic Private Internet Protocol Addressing |
| APIR | Aksyon Paputok Injury Reduction |
| APIR | Annual Pensioners Information Revalidation |
| APIR | Annual Program Implementation Report |
| APIR | Asociación Pro Infancia Riojana |
| APIR | Assessment Prioritisation Implementation And Review |
| APIR | Associação Portuguesa de Insuficientes Renais |
| APIR | Association Parisienne des Internes en Radiologie |
| APIS | Advance Passenger Information System |
| APIS | Advanced Papyrological Information System |
| APIS | Advanced Personalization For Information Services |
| APIS | Alcohol Policy Information System |
| APIS | Analyses And Programming Information Systems |