| Abbreviation | Definition |
|---|---|
| IMEA | Investment Management Education Alliance |
| IMPACT | International Multilateral Partnership Against Cyber Threats |
| IMRA | Incentive Manufacturers and Representative Alliance |
| INBA | Inland Northwest Business Alliance |
| INCA | International Neuroendocrine Cancer Alliance |
| INDIA | Indian National Developmental Inclusive Alliance |
| INMA | Infragard National Members Alliance |
| INPA | Independent Neurorehabilitation Providers Alliance |
| INSA | Intelligence and National Security Alliance |
| INSA | Intelligence National Security Alliance |
| IOA | Islands of Opportunity Alliance |
| IODA | Independent Online Distribution Alliance |
| IOPA | Internet of Protocols Alliance |
| IPAP | Independent Procurement Alliance Program |
| IPDA | Integrated Project Delivery Alliance |
| IPDA | International Planetary Data Alliance |
| IPRA | Independent Public Relations Alliance |
| IPWA | Indian Peaks Wilderness Alliance |
| IREA | International Renewable Energy Alliance |
| IREA | Iron Range Economic Alliance |