| Abbreviation | Definition |
|---|---|
| IDF | Intel Developer Forum |
| IDFW | iD Dunedin Fashion Week |
| IDMC | International Display Manufacturing Conference |
| IDMEC | Innovative Design and Manufacturing Engineering Conference |
| IDRC | International Diffuse Reflectance Conference |
| IDRC | International Disaster and Risk Conference |
| IDRC | International Display Research Conference |
| IDRC | International Donor Registry Conference |
| IDTC | International Dance Teacher Conference |
| IDY | International Day of Yoga |
| IE | Import Export |
| IE | In Explanation |
| IEAC | Inland Empire Athletic Conference |
| IECC | Infant and Early Childhood Conference |
| IECEC | International Energy Conversion Engineering Conference |
| IECEC | Inter-society Energy Conversion Engineering Conference |
| IECON | IEEE International Conference on Industrial Electronics, CONtrol, and Instrumentation |
| IEDM | IEEE International Electron Devices Meeting |
| IEEC | International Early Engines Conference |
| IEIC | International Entomophagous Insects Conference |