| LAR | Liquid Aircraft Rocket | 液体燃料航空火箭 |
| LAR | live animal regulation | 活动物规则 |
| LAR | Laramie, WY, USA - General Brees Field (Airport Code) | 美国怀俄明州拉勒米-布里斯将军机场（机场代码） |
| LAR | License Amendment Request | 许可证修订请求 |
| LAR | Load Access Rights | 加载访问权限 |
| LAR | Logistics Assistance Representative | 后勤支援代表 |
| LAR | laryngology | 喉科学 |
| LAR | Light Armored Reconnaissance | 轻型装甲侦察 |
| LAR | Log Area Ratio | 对数面积比率 |
| LAR | Liquid Argon | 液氩 |
| LAR | Leader Auto Resources (automobile aftermarket purchasing co-op, Canada) | Leader Auto Resources（加拿大汽车售后市场采购合作伙伴） |
| LAR | Local Access Resale | 本地访问转售 |
| LAR | Launch Acceptability Region (USAF) | 发射可接受区域（USAF） |
| LAR | Liferay Archive | Liferay存档 |
| LAR | Long-Acting Release | 长效释放装置 |
| LAR | Liaison Action Request | 联络行动要求 |
| LAR | Location-Aided Routing | 位置辅助布线 |
| LAR | Look-Ahead Report | 前瞻性报告 |
| LAR | Lot Acceptance Rate | 批次验收率 |
| LAR | Laboratorio Analisi e Ricerche (Italian: analysis and research lab) | Analisi e Ricerche实验室（意大利语：分析和研究实验室） |
| LAR | Libyan Arab Republic | 利比亚阿拉伯共和国 |
| LAR | Laramie, Wyoming USA | 美国怀俄明州拉勒米 |
| LAR | License Agreement Requisite | 许可协议必需 |
| LAR | Lot Age Report | 批龄报告 |
| LAR | Lizard Attitude Railroad | 蜥蜴姿态铁路 |
| LAR | Link Analyst Route | 链接分析路线 |
| LAR | Legal Amount Recognition | 法定金额确认 |
| LAR | Laprascopic Anterior Resection | 腹腔镜前切除术 |
| LAR | Launch Acceptability Region | 启动可接受区域 |
| LAR | Low Anterior Resection (of colon) | 低位前切除术（结肠） |
| LAR | Launch Associated Railcar | 启动相关轨道车 |
| LAR | Lowest Acceptable Revision (manufacturing) | 最低可接受版本（制造） |
| LAR | Logistics Area Representative | 物流区域代表 |
| LAR | Legally Authorized Representative | 法定授权代表 |
| LAR | late asthmatic response | 晚期哮喘反应 |
| LAR | latex agglutination reaction | 胶乳凝集反应 |
| LAR | Learning, Actions, Results | 学习、行动、结果 |
| LAR | lymphadenopathy-associated retrovirus | 淋巴结病相关逆转录病毒 |
| LAR | Loan/Application Register | 申请登记的贷款/ |
| LAR | left arm,reclining | 左臂，斜倚 |
| LAR | left arm recumbent | 左臂横卧 |
| LAR | Latin American Region | 拉丁美洲地区 |
| LAR | Long Acting Release | 长效释放装置 |
| LAR | Leitungsanlagenrichtlinie (German Code of Practice) | Leitungsanlagenrichtlinie（德国业务守则） |
| LAR | Local Acquisition Radar | 当地搜索雷达 |
| LAR | Luftwaffenausbildungsregiment (German Air Force; LWAUSBRGT) | 德国空军（LWAUSBRGT） |
| LAR | Leaf Area Ratio | 叶面积比率 |
| LAR | Large Account Reseller | 大客户经销商 |
| LAR | Liaison Action Record | 联络行动记录 |
| LAR | Local Acquisition Representative | 当地采购代表 |
| LAR | Logistics Assistance Resource | 后勤援助资源 |
| LAR | Large Account Reseller(s) | 大客户经销商 |
| LAR | Logistics Assessment Review | 后勤估价审查 |
| LAR | Light Attack Reconnaissance | 轻型攻击侦察 |
| LAR | Liberty Acres Rabbitry (Ohio) | Liberty Acres Rabbitry（俄亥俄州） |
| LAR | Leaflet Artillery Round | 传单炮弹 |
| LAR | Large Adaptive Reflector (antenna) | 大型自适应反射器（天线） |
| LAR | Lowest Acceptable Rate | 最低可接受费率 |
| LAR | Lancer Assault Rifle (gaming) | 枪骑兵突击步枪（游戏） |
| LAR | Luis Antonio Renteria (LAR Games) | 路易斯·安东尼奥·伦特里亚（LAR游戏） |
| LAR | Little Apostles of Redemption | 救赎的小使徒 |
| LAR | Light Automatic Rifle | 轻型自动步枪 |
| LAR | Lattice Aided Reduction | 格点辅助归约 |
| LAR | Little America Records, LLC | 小美国唱片有限责任公司 |
| LAR | Legal Amount Recognition (remittance/lockbox processing) | 法定数额识别(汇款/锁的箱子处理) |
| LAR | Light Artillery Rocket | 轻型炮兵火箭 |
| LAR | Late-Phase Asthmatic Reaction | 晚期哮喘反应 |
| LAR | Lateral Acceleration for Rollover (automobile performance testing) | 翻车横向加速度（汽车性能测试） |