| Abbreviation | Definition |
|---|---|
| LHS | Left Hand Side |
| Li | Lithium |
| LIB | Left InBoard |
| LIC | Load Interface Circuit |
| LID | Leadless inverted Device |
| LID | Logistics Identification Document |
| LIDAR | Laser-Radar |
| LIE | Left Inboard Elevon |
| LIM | LIMit |
| LIMRC | LRU Identification and Maintenance Requirements Catal |
| LIMS | Logistics Inventory Management System |
| LIN | Linear |
| LIN | Liquid Nitrogen |
| LINJET | Liquid Injection Electric Thruster |
| LINS | Laser Inertial Navigation System |
| LiOH | Lithium Hydroxide |
| LION | Low Energy Ion and Electron Instrument |
| LIQ | LIQuid |
| LIS | Logistics Information System |
| LISA | Laser Interferometer Space Antenna |