| Abbreviation | Definition |
|---|---|
| LSW | Library Society of the World |
| LTA | Library Technical Assistant |
| LTAG | Library Technology Advisory Group |
| LTAS | Library Technicians and Assistants Section |
| LTG | Library Technology Guide |
| LTI | Library Technologies Inc |
| LTMC | Library Technology Media Center |
| LTP | Library Telescope Program |
| LTR | Library Theory and Research |
| LTRC | Library and Technology Resource Center |
| LTSA | Library Training Services Australia |
| LTSR | Library Turnstiles Student Retention |
| LTWA | Library of Tibetan Works and Archives |
| LUIGI | Library Users Internet Gopher Interface |
| LUIS | Library User Information Service |
| LUIS | Library User Information Services |
| LVA | Library Of Virginia |
| LVIS | Libraries Very Interested in Sharing |
| LVN | Library Video Network |
| LVP | Library Volunteer Person |