| Abbreviation | Definition |
|---|---|
| LSSP | Launch Site Support Plan |
| LSSR | Landing Site Support Review |
| LSSRC | Life Sciences Shuttle Research Centrifuge |
| LSST | Launch Site Support Team |
| LST | Large Space Telescope |
| LST | Large Stellar Telescope |
| LST | Launch Support Team |
| LST | Local Standard Time |
| LSTE | Launch Site Transportation Equipment |
| LSU | Life Support Umbilical |
| LSWT | Low Speed Wind Tunnel |
| LT | Lead Time |
| LT | Left |
| LT | Low Trajectory |
| LTA | Lower Torso Assembly |
| LTD | Lift-to-Drag |
| LTD | Limited |
| LTE | Lower Tracking Error |
| LTG | LighTinG |
| LTG | Linear Tangent Guidance |