| Abbreviation | Definition |
|---|---|
| INTC | International Nonwovens Technical Conference |
| INTLEC | INternational TeLecommunications Energy Conference |
| INTMAG | IEEE INTernational MAGnetics Conference |
| INTOPT | IEEE Lasers & Electro-Optics Society Summer Topical on INTegrated OPToelectrics |
| INW | IEEE Intelligent Network Workshop |
| IOAC | International Oceanic Airspace Conference |
| IOCM | International Organic Chemistry Meeting |
| IODC | International Open Data Conference |
| IODC | International Optical Design Conference |
| IODL | International Open and Distance Learning Symposium |
| IOMC | International Online Medical Conference |
| IOMC | International Online Medical Conferences |
| IOOC | International Conference on Integrated Optics & Optical Fiber Communication |
| IOOC | International Conference on Integrated Optics and Optical Fibre Communication |
| IOPD | International Oilseed Producers Dialogue |
| IOSC | International Oil Spill Conference |
| IOSC | International Operators Support Conference |
| IPAC | International Particle Accelerator Conference |
| IPBC | International Pulp Bleaching Conference |
| IPC | IEEE Photonics Conference |