sort by Rank | Alpha
| Possible Meanings | Rank |
| International Association for Semiotic | **** |
| International Accounting and Auditing Standards | **** |
| Internationally Accepted Accounting Standards | **** |
| Institute of Advanced Architectural Studies | *** |
| Internal Audit Advisory Services | *** |
| Immigration to American Society | *** |
| Institute for African American Studies | *** |
| Institute for Asian and African Studies | *** |
| Inner Asian and Altaic Studies | *** |
| Institute of Asian and African Studies | *** |
| Internationally Accepted Auditing Standards | *** |
| Internal Audit and Advisory Services | ** |
| Institute of Architecture of Application Systems | ** |
| Institute of Agriculture and Animal Sciences | ** |
| Institute of Auctioneers and Appraisers Scotland | ** |
| intra-abdominal abscess infections | ** |
| International Association of Ambulatory Surgery | ** |
| International Association of Academies of Sciences | ** |
| Institutional Assessment and Studies | ** |
| International Association of Agriculture Students | ** |
| Institute of Afro Asian Studies | ** |
| Insurance Actuarial Advisory Services | ** |
| Illawarra Area Assistance Scheme | ** |
| Institute for Asian American Studies | ** |
| Indian Association for American Studies | ** |
| International Ambassador Alumni Society | ** |
| Institute of Aquatic and Atmospheric Sciences | ** |
| Integrated Agri Aquaculture Systems | ** |
| Institute for Advanced Architectural Studies | ** |
| International Auction Appraisal Services | ** |
| Is Awarded by the Senate | ** |
| Individuellen Aerob Anaeroben Schwelle | ** |
| Indian Audit and Accounts Services | ** |
| Inspection of an Asset | ** |
| International Association of Adaptive Sciences | ** |
| Institute of Aviation and Aviation Safety | ** |
| Institute of Auctioneers Appraisers in Scotland | ** |
| Intercultural Alliance of Artists Scholars | ** |
| In African American Studies | ** |
| Institute of Aesthetic Arts Sciences | ** |
| Institute of African and Asian Studies | ** |
| International Assessment of Agricultural Science | ** |
| International Association of Asian Studies | ** |
| Indian Accounts and Audit Service | ** |
| Irish Association for American Studies | ** |
| Immigration Appeals Advisory Service | ** |
| Institute of Agricultural and Animal Sciences | ** |
| Institute of Agriculture and Science | ** |
| Institutes of Advanced Advertising Studies | ** |
| Israel Association of American Studies | ** |
| Incident Alerting and Assessment System | ** |
| Institute of Advanced Advertising Studies | ** |
| Institute of Applied Aboriginal Studies | * |
| Integrated Asian Advice Service | * |
| Internal Audit and Advisory | * |
| International Anti Aging Show | * |
| Institute for Agriculture and Animal Science | * |
| Institute of Agriculture Animal Sciences | * |
| International Association of the Academies of Sciences | * |
| Indigenous Australian Admission Scheme | * |
| International Association of Administrative Sciences | * |
| Immigration and Asylum Accreditation Scheme | * |
| Institute of Agricultural and Animal Science | * |
| Integrated Agriculture Aquaculture Systems | * |
| International Association Agricultural Students | * |
| Irish American Archives Society | * |
| Icelandic Association for American Studies | * |
| Independent Alternate Air Source | * |
| Indian Association for Advancement of Science | * |
| Integrative Approaches to Abiotic Stress | * |
| International Associations of Agricultural Students | * |
| Institut fur Angewandte Analysis und Stochastik | * |