| LSA | Labor Services Agency | 劳工服务局 |
| LSA | Land Settlement Association | 土地协调协会 |
| LSA | Leukemia Society of America | 美国白血病学会 |
| LSA | Linguistic Society of America | 美国语言学学会 |
| LSA | left sacro anterior | 骶左前 |
| LSA | Link State Advertisement | 链路状态广播 |
| LSA | Licentiate of the Society of Apothecaries | 药剂学会医学执照 |
| LSA | Label Switched Application | 标记交换应用 |
| LSA | Lead Sheet Association (UK) | 铅表协会（英国） |
| LSA | Lebanese Society of Anesthesiologists | 黎巴嫩麻醉医师协会 |
| LSA | Linux Standards Association | Linux标准协会 |
| LSA | License of the Society of Apothecaries | 药剂师协会执照 |
| LSA | Louisiana Shooting Association (Metairie, LA) | 路易斯安那州射击协会 |
| LSA | Lutheran Student Association | 路德会学生协会 |
| LSA | Latino Students Association | 拉丁裔学生协会 |
| LSA | Louisville Swim Association | 路易斯维尔游泳协会 |
| LSA | Law and Society Association (Amherst, MA) | 法律与社会协会（马萨诸塞州阿默斯特） |
| LSA | Loyal Supporters Association | 忠实支持者协会 |
| LSA | Latent Semantic Analysis | 潜在语义分析 |
| LSA | Logistics Support Agency | 后勤支持机构 |
| LSA | Local Security Administrator | 本地安全管理员 |
| LSA | List of Sections Affected | 受影响路段列表 |
| LSA | Loss of Situational Awareness | 情境意识丧失 |
| LSA | Lilly Software Associates, Inc. | 礼来软件联合公司。 |
| LSA | Light Sport Aircraft | 轻型运动飞机 |
| LSA | Life Support Area | 生命支持区 |
| LSA | Logistics Service Agreement | 物流服务协议 |
| LSA | Late Stone Age | 晚期石器时代 |
| LSA | Life Saving Appliance(s) | 救生设备 |
| LSA | Lightwave Signal Analyzer | 光波信号分析仪 |
| LSA | London Small Arms Company | 伦敦小武器公司 |
| LSA | Labor Surplus Area | 劳力过剩区 |
| LSA | Lemming Society of America | 美国莱明学会 |
| LSA | Leading Supply Assistant (UK naval rank or rating level) | 主要供应助理（英国海军军衔或等级） |
| LSA | Logistics Module - Stand Alone | 物流模块-独立 |
| LSA | Learning Skills Assessment | 学习技能评估 |
| LSA | Licensed Surgical Assistant | 持证外科助理 |
| LSA | Lego Space Alliance | 乐高空间联盟 |
| LSA | Licensed Staff Agreement (State Farm Insurance) | 许可员工协议（国家农场保险） |
| LSA | Lothian Surgical Audit | 洛锡安外科审计 |
| LSA | Low Solar Absorbency (paint with reflective properties in the near infrared spectrum) | 低太阳能吸收率（在近红外光谱中具有反射特性的涂料） |
| LSA | Line Shaft Assembly | 管路轴组件 |
| LSA | Landform-Sediment Assemblage | 地貌沉积物组合 |
| LSA | Leventhal School of Accounting (University of Southern California) | 莱文塔尔会计学院（南加州大学） |
| LSA | Linear Servo Actuator | 线性伺服致动器 |
| LSA | Lifetime Savings Account | 终身储蓄账户 |
| LSA | Lymphosarcoma (cancer of the lymphatic system) | 淋巴肉瘤（淋巴系统癌） |
| LSA | d-Lysergic Acid Amide | d-赖氨酸酰胺 |
| LSA | Living Spring Academy (Iligan City, Phillipines) | Living Spring Academy（菲律宾伊利甘市） |
| LSA | Limited Security Area | 有限的安全区域 |
| LSA | Large Sample Approximation | 大样本近似 |
| LSA | List of Code of Federal Regulations Sections Affected (manual detailing changes to the CFR) | 受影响的联邦法规章节列表（详细说明CFR变更的手册） |
| LSA | Logistic System Acquisition | 物流系统采购 |
| LSA | Logistics Systems Analysis/Analyst | 物流系统分析/分析员 |
| LSA | Local Security Authority (Windows NT) | 本地安全机构（Windows NT） |
| LSA | Link State Advertisements | 链接状态广告 |
| LSA | Literature, Science, and the Arts (university) | 文学、科学和艺术（大学） |
| LSA | Louisiana Statutes Annotated | 路易斯安那州注释法规 |
| LSA | Lead Standardization Activity | 铅标准化活动 |
| LSA | Local Security Authority | 当地安全机构 |
| LSA | Line Source Antenna | 线源天线 |
| LSA | liver specific antigen | 肝特异性抗原 |
| LSA | left sacroanterior | 左骶前肌 |
| LSA | lung surfactant activity | 肺表面活性物质活性 |
| LSA | Licensed Space Arrangement | 许可空间安排 |
| LSA | Low Specific Activity | 低比活度 |
| LSA | Learning Support Assistant | 学习支持助理 |
| LSA | Landing Ship Assault | 登陆舰袭击 |
| LSA | Lubricant, Small Arms | 润滑剂，小臂 |
| LSA | Logistics Support Analysis | 后勤保障分析 |
| LSA | Logistics Support Area | 后勤保障区 |
| LSA | Line Sharing Adapter | 线路共享适配器 |
| LSA | Legal Services Agency | 法律服务机构 |
| LSA | Level Shift Amplifier | 电平移位放大器 |
| LSA | Logistical Support Agency | 后勤支持机构 |
| LSA | Large Space Antenna | 大空间天线 |
| LSA | Limited Space charge Accumulation | 有限空间电荷累积 |
| LSA | Lichen Sclerosus et Atrophicus | 硬化性萎缩性地衣 |
| LSA | Local Service Area | 本地服务区 |
| LSA | Labor Service Agency | 劳工服务局 |
| LSA | Logic State Analyzer | 逻辑状态分析仪 |
| LSA | Least Square Approximation | 最小二乘逼近 |
| LSA | Low Speed Auxiliary | 低速辅助 |
| LSA | Lotus Solution Architecture | Lotus解决方案体系结构 |
| LSA | Laser Spike Annealing (semiconductor process supported by Ultratech) | 激光尖峰退火（Ultratech支持的半导体工艺） |
| LSA | Logistics Systems Architects | 物流系统架构师 |
| LSA | Local Search Approach | 本地搜索方法 |
| LSA | Lubricant, Semifluid, Automatic weapons | 润滑剂，半流体，自动武器 |
| LSA | LaSalle Academy (various locations) | 拉萨尔学院（不同地点） |
| LSA | Lysergic Acid Amide (alkaloid with a chemical structure similar to LSD) | 赖氨酸酰胺（化学结构类似于LSD的生物碱） |
| LSA | Local Services Agreement | 本地服务协议 |
| LSA | Laser Surface Authentication | 激光表面认证 |
| LSA | Ligno-Sulfonic Acid | 木质磺酸 |
| LSA | La Salle Academy (Iligan City, Philippines) | 拉萨尔学院（菲律宾伊利甘市） |
| LSA | Local Spiritual Assembly (Institution of the Baha'i Faith) | 当地的灵性总成(单位巴哈伊) |
| LSA | Large-Scale Array | 大规模阵列 |
| LSA | Low Source Alignment | 低源校准 |
| LSA | Launch Services Agreement | 启动服务协议 |
| LSA | Link-State Algorithm | 链路状态算法 |
| LSA | Liberty Search Associates, Inc. (Clearwater, FL) | Liberty Search Associates，Inc.（佛罗里达州克利尔沃特） |