| Abbreviation | Definition |
|---|---|
| IAAB | Iranian Alliances Across Borders |
| IAAC | International Alliance for the Advancement of Children |
| IAAL | International Alliance for Accelerative Learning |
| IABS | International Alliance for Biological Standardization |
| IACE | Industry Alliance for Continuing Education |
| IACO | International Alliance of Carer Organizations |
| IADA | Independent Authorised Distributor Alliance |
| IAEP | International Alliance for Electronic Payments |
| IAES | Illinois Alliance Of Essential Schools |
| IAHA | Animal Husbandry Alliance |
| IAHA | Inter American Health Alliance |
| IAHC | Iowa Alliance in Home Care |
| IAI | International Alliance of Inhabitants |
| IAIE | International Alliance for Invitational |
| IAIE | International Alliance of Invitational Education |
| IAMA | Independent Aircraft Modifier Alliance |
| IAO | Industry Alliance Office |
| IAPA | International Alliance for the Prevention of AIDS |
| IAPA | International Alliance of Protected Areas |
| IAPG | Indian Alliance of Patient Groups |