| Abbreviation | Definition |
|---|---|
| LIPS | Logic Inference Processing Steps |
| LIRA | Learning Information Retrieval Agent |
| LIRC | Linux Infrared Remote Control |
| LISA | Language for Instruction Set Architectures |
| LISA | Leaders in Software and Art |
| LISP | List Processing |
| LITS | Laboratory Information Management System |
| LIU | Logged-In User |
| LIVI | The Lighting Visualiser |
| LKGC | Last Known Good Configuration |
| LKL | Linux Kernel Library |
| LKP | Linux Kernel Performance |
| LLAPI | Low Level Application Programming Interface |
| LLB | Low Level Bootloader |
| LLDD | Low-Level Design Document |
| LLF | Low Level Format |
| LLF | Low Level Formatter |
| LLN | Linux Letters and Numbers |
| LM | LAN (Local Area Network) Manager |
| LM | Lisp Maintainer |