| Abbreviation | Definition |
|---|---|
| LION | Learning Institute Organization Network |
| LIP | Learner Information Package |
| LIP | Learning in Practice |
| LIP | Life In Perspective |
| LIPS | Leiter International Performance Scale |
| LIR | Language Information and Reality |
| LIR | Learning in Retirement |
| LIRN | Learning In Retirement Network |
| LIRT | Library Instruction Round Table |
| LIS | Learning and Intelligent Systems |
| LIS | Learning Information Services |
| LIS | Learning Information System |
| LIS | Library Information System |
| LISA | Language Interests Speaking Animals |
| LISA | Learning Intelligence Search Automation |
| LISA | Library And Information Science Abstracts |
| LISA | London International Schools Association |
| LISSA | Learning Intelligent System for Student Assistance |
| LISTEN | Local Initiative Support Training and Education Network |
| LITE | League of Intravenous Therapy Education |