| Abbreviation | Definition |
|---|---|
| ILSC | International Language Services Conference |
| ILSP | Institute for Language and Speech Processing |
| ILTC | Intensive Language Training Center |
| ILTI | Indonesian Language Teacher Immersion |
| ILTLP | Intercultural Language Teaching and Learning in Practice |
| ILTLP | Intercultural Language Teaching and Learning Project |
| ILTP | Individual Language Training Plan |
| ILU | Inter Language Unification |
| IML | Imandra Modelling Language |
| IML | Irion Micro Language |
| IML | Issuu Markup Language |
| IMLP | International Maritime Language Programme |
| IO | Indirect Object |
| IOC | Indirect Object Clitic |
| IOWA | IELTS Online Writing Assistant |
| IPSL | Indo Pakistani Sign Language |
| IQL | Insight Query Language |
| IRAL | Interactive Robotics and Language |
| ISBL | information systems business language |
| ISC | International Songwriting Competition |