| LSO | London Symphony Orchestra | 伦敦交响乐团 |
| LSO | Lesotho (ISO Country code) | 莱索托（ISO国家代码） |
| LSO | Low Speed Output | 低速输出装置 |
| LSO | Linux Standards Organization | Linux标准组织 |
| LSO | LAN Systems Organization (Intel) | 局域网系统组织（Intel） |
| LSO | Large Scale Organization | 大规模组织 |
| LSO | Lumbosacral Orthosis | 腰骶矫正术 |
| LSO | Left Salpingo-Oophorectomy | 左输卵管卵巢切除术 |
| LSO | Landing Signal Officer | 着陆信号员 |
| LSO | Laser Safety Officer | 激光安全员 |
| LSO | Large Send Offload | 大型发送卸载 |
| LSO | Local Switching Office | 本地交换局 |
| LSO | Lansdowne Symphony Orchestra (Lansdowne, PA) | 兰斯顿交响乐团（宾夕法尼亚州兰斯顿） |
| LSO | Lawson Smart Office | 劳森智能办公室 |
| LSO | Leveraged Sell-Out | 杠杆式抛售 |
| LSO | cerium doped lutetium orthosilicate | 铈掺杂正硅酸镥 |
| LSO | Ladies Social Outreach | 女性社会外展 |
| LSO | Local Shared Objects (web browsers) | 本地共享对象（web浏览器） |
| LSO | Littleton Symphony Orchestra (Littleton, CO) | 利特尔顿交响乐团（加利福尼亚州利特尔顿） |
| LSO | Linguistic Sign-Off | 语言签字 |
| LSO | Lasmo, P. L. C. | 拉斯莫，P.L.C。 |
| LSO | Les Sables, France | Les Sables，法国 |
| LSO | left superior oblique | 左上斜肌 |
| LSO | Learning Support Office | 学习支持办公室 |
| LSO | Lansing Swim Organization ( Lansing, Michigan) | 兰辛游泳组织（密歇根州兰辛） |
| LSO | Library Systems Office | 图书馆系统办公室 |
| LSO | Local Serving Office | 当地服务办公室 |
| LSO | Launch Safety Officer | 发射安全官 |
| LSO | Legal Support Organization | 法律支持组织 |
| LSO | Linked Simulation-Optimization | 链接模拟优化 |
| LSO | Local Service Organization | 本地服务组织 |
| LSO | Lone Star Overnight (Austin, TX) | 孤星住宿（德克萨斯州奥斯汀） |
| LSO | Legal Services Office (Montana) | 法律服务办公室（蒙大拿州） |
| LSO | Legislative Service Organization | 立法服务机构 |
| LSO | Lifestyles Organization | 生活方式组织 |
| LSO | Lovaniensis Scientificus Ordo (Louvain-la-Neuve, Belgium) | Lovaniensis Scientificus Ordo（比利时卢瓦因拉纽夫） |
| LSO | List of Stored Options | 存储选项列表 |
| LSO | Local Servicing Office | 当地服务办公室 |
| LSO | Longwood Symphony Orchestra (Brookline, MA) | Longwood交响乐团（马萨诸塞州布鲁克林） |
| LSO | Licensed Security Officer | 持证安全员 |
| LSO | Logistics Support Officer | 后勤支助干事 |
| LSO | Learning Support Organization | 学习支持组织 |
| LSO | Landward Security Officer | 陆上安全员 |
| LSO | Limited Service Offering | 有限的服务提供 |
| LSO | Life Support Officer | 生命支持官 |
| LSO | Landing Safety Officer | 降落安全官 |
| LSO | lateral superior olive | 外侧上橄榄 |
| LSO | left superior olive | 左上橄榄 |