| Abbreviation | Definition |
|---|---|
| IHTC | International Hospitality Tourism Conference |
| IHTC | International Humanitarian Technology Conference |
| IIAC | Iowa Intercollegiate Athletic Conference |
| IIBS | India International Boat Show |
| IIBS | India International Bullion Summit |
| IICE | Ireland International Conference on Education |
| IIOC | International Industrial Organization Conference |
| IIOGE | Indonesian International Oil and Gas Exhibition and Conference |
| IIOP | International Institute On Partnerships |
| IISF | Irish Information Security Forum |
| IJCIR | Israeli Jewish Council for Interreligious Relations |
| IJCNN | International Joint Conference on Neural Networks |
| IJSIS | IEEE International Joint Symposia on Intelligence and Systems |
| IKC | Indiana Kentucky Conference |
| IKC | International Kids Conference |
| IKC | Island Kids Conference |
| ILAC | International Leadership Alumni Conference |
| ILC | International Leadership Conference |
| ILC | International Lisp Conference |
| ILCC | International Liquid Crystal Conference |