| LARS | Local Area Radio System | 局域无线电系统 |
| LARS | Laboratory Assistant And Research Systems | 实验室助理和研究系统 |
| LARS | Logistics And Resource System | 物流和资源系统 |
| LARS | Larscom, Inc. | Larscom公司。 |
| LARS | Left Add, Right Subtract | 左加法、右减法 |
| LARS | Lets All Renounce Sugar | 让所有人放弃糖 |
| LARS | Laurel Advocacy And Referral Services | Laurel宣传和转介服务 |
| LARS | Leak Alarm And Response System | 泄漏报警和响应系统 |
| LARS | Light Amplifying And Reflecting Satellite | 光放大和反射卫星 |
| LARS | Large Animal Research Station | 大型动物研究站 |
| LARS | Locator and Rescue System | 定位器和救援系统 |
| LARS | Los Angeles Radiological Society | 洛杉矶放射学会 |
| LARS | Laser Airborne Remote Sensing | 激光机载遥感 |
| LARS | Laser Angular Rate Sensor | 激光角速率传感器 |
| LARS | Laser Aided Rocket System | 激光辅助火箭系统 |
| LARS | Low Altitude Radar System | 低空雷达系统 |
| LARS | License and Review System | 许可证和审查制度 |
| LARS | Los Angeles Riot Squad | 洛杉矶防暴队 |
| LARS | Los Angeles Recording School | 洛杉矶录音学校 |
| LARS | Light Artillery Rocket System | 轻型火炮火箭系统 |
| LARS | Left Add Right Subtract (contact lenses) | 左加右减（隐形眼镜） |
| LARS | Long-Term Acoustic Recording System | 长期声学记录系统 |
| LARS | Light Weight Airborne Recovery System | 轻型机载回收系统 |
| LARS | Lower Atmosphere Research Satellite | 低层大气研究卫星 |
| LARS | Littleton Absentee Reporting System | Littleton缺勤报告系统 |
| LARS | Left Add, Right Subtract (artillery fire sighting) | 左加右减（火炮瞄准） |
| LARS | Like A Rolling Stone | 像滚石一样 |