| Abbreviation | Definition |
|---|---|
| LaRC | Langley Research Center (Hampton, VA) |
| LARS | Laminar Angular Rate Sensor |
| LARS | Leak Alarm And Response System |
| LARS | Light Amplifying And Reflecting Satellite |
| LARSSYAA | Laboratory for Application of Remote Sensing System for Aircraft Analysis |
| LASCO | White Light And Spectrometric Coronagraph |
| LASCOT | LArge Screen COlor Television |
| LASV | Low-Altitude Supersonic Vehicle |
| LAT | Large Angle Torque |
| LAT | Latch |
| LAT | Lateral |
| LAT | Lot Acceptance Test |
| LATS | LDEF (Long Duration Exposure Facility) Assembly and Transportation System |
| LATS | LDEF Assembly and Transportation System |
| LAURA | Langley Aerothermodynamic Upwind Relaxation Algorithm |
| LB | Launch Boost |
| LB | Launch Bus |
| LB | Load Bank |
| LB | Low Bay |
| LB | Lower Brace |