| Abbreviation | Definition |
|---|---|
| AIP | Association of Internet Professionals |
| AIPA | Alberta Irrigation Project Association |
| AIPA | Alberta Irrigation Projects Association |
| AIPA | All India Pickleball Association |
| AIPA | Arizona Interscholastic Press Association |
| AIPA | Australian and International Pilots Association |
| AIPA | Australian International Pilots Association |
| AIPP | Association of Independent Publishing Professionals |
| AIPP | Association of international Property Professionals |
| AIPS | Association Internationale de la Presse Sportive |
| AIPT | Association for International Practical Training |
| AIR | Association of Independents in Radio |
| AIRA | American Independent Refiners Association |
| AIRA | Australasian Investor Relations Association |
| AIRD | Association of Ingersoll Rand Distributors |
| AIRE | Association of Industrial Real Estate |
| AIRH | Association Internationale de Recherche Hydraulique |
| AIRM | Association of Irish Risk Management |
| AIRR | Association |
| AIRR | Association of Independent Readers and Rootworkers |