| Abbreviation | Definition |
|---|---|
| IAI | Indian Angel Investor |
| IAI | Intelligent Automation Inc |
| IAI | Irwindale Arms Inc |
| IAI | Irwindale Arms, Inc. |
| IAI | Israeli Aircraft Industries |
| IAJC | Isar Amper Jazz Company |
| IAM | Industrial Auction Marketplace |
| IAPC | International Association of Political Consultants |
| IAPC | Internet Access Point Corp |
| IAR | Industria Aeronautic Romana |
| IAR | Industry Aeronautical Romania |
| IARE | Inland American Real Estate Trust Inc |
| IAS | Industrial Automation Solutions, Inc. |
| IAS | Innovative Aviation Services |
| IAS | Integrated Asset Services |
| IAS | Island Aviation Services, Limited |
| IASC | International Association of Skateboard Companies |
| IASE | International Association of Space Entrepreneurs |
| IATA | International Air Transport Association |
| IAUA | Insurance Agents United Association |