| Abbreviation | Definition |
|---|---|
| HTTC | High Temperature Tribology Conference |
| HTTS | Hike to the Summit |
| HUICS | Annual Symposium on HUman Interaction with Complex Systems |
| HVC | Haifa Verification Conference |
| HVCHIN | IEEE/CSEE Joint Conference on High-Voltage transmission systems in CHINa |
| IAAC | Indiana Asian American Conference |
| IAAIC | Innovative Applications of Artificial Intelligence Conference |
| IACA | International Association of Comprehensive Aesthetics |
| IACAS | Israel Annual Conference on Aerospace Sciences |
| IACC | International Anti Corruption Conference |
| IACC | International Anti-Corruption Conference |
| IACC | International Association of Conference Centres |
| IACVB | Interstate American Convention Visitor Bureaus |
| IAEC | International Aerospace Engineering Conference |
| IAEC | International Atlantic Economic Conference |
| IAEC | International Automotive Engineering Conference |
| IAHCC | International Association for Human Caring Conference |
| IAI | IEEE Southwest Symposium on Image Analysis and Interpretation |
| IAIC | International Agriculture Innovation Conference |
| IAJC | International Association of Journals and Conferences |