| Abbreviation | Definition |
|---|---|
| IDBA | International Dragon Boat Association |
| IDBS | Irish Dental Benevolent Society |
| IDC | Independent Distribution Collective |
| IDC | International Defence Club |
| IDCA | India Development Coalition of America |
| IDCA | International Digestive Cancer Alliance |
| IDCAS | International Development Council for Academic Studies |
| IDCF | Isle of Dogs Community Foundation |
| IDCP | International Dolphin Conservation Program |
| IDCW | Infant Death Center of Wisconsin |
| IDEA | Illinois District Endowment Assurance fund |
| IDEA | Illinois Drug Education Alliance |
| IDEA | In the Defense of Earth and Animals |
| IDEA | Indiana Distributed Energy Advocates |
| IDEA | Indiana Drug Enforcement Association |
| IDEA | Interactive Distance Education Alliance |
| IDEAL | Informing and Designing Education for All Learners |
| IDEAL | Institute for Diversity Education and Leadership |
| IDF | Immune Deficiency Foundation |
| IDF | Initiatives for Development Foundation |