| LSO | Lakota Sports Organization 
| Others |
| LSO | Land/Structure/Occupancy
| Others |
| LSO | Landing Safety Officer
| Others |
| LSO | Landing Signal Officer
| Others |
| LSO | Landing Signals Officer
| Others |
| LSO | Landing Support Officer
| Others |
| LSO | Language Support Office
| Others |
| LSO | Lansing Swim Organization
| Others |
| LSO | Lansing Symphony Orchestra
| Others |
| LSO | Large Segment Offload
| Others |
| LSO | Large Send Offload
| Others |
| LSO | Large Solar Observatory
| Others |
| LSO | Laser Safety Officer
| Others |
| LSO | Laser Safety Operator
| Others |
| LSO | Last Subject Out
| Others |
| LSO | Launch Safety Officer
| Others |
| LSO | Learning Support Office
| Others |
| LSO | Left Salpingo Oopherectomy
| Others |
| LSO | Left Salpingo Oophorectomy
| Others |
| LSO | Left Salpingo-Oophorectomy
| Others |
| LSO | Legal Services Organization
| Others |
| LSO | Legal Support Organization
| Others |
| LSO | Legislative Service Office
| Others |
| LSO | Les Sables, France
| Others |
| LSO | Liberal Screech Owl
| Others |
| LSO | Library Student Organization
| Others |
| LSO | Library Systems Office
| Others |
| LSO | Life Science Outsourcing
| Others |
| LSO | Life Sciences Orchestra
| Others |
| LSO | Lifecycle Service Orchestration
| Others |
| LSO | Lifecycle Services Orchestration
| Others |
| LSO | Limited Scope Operator
| Others |
| LSO | Limited Submission Opportunities
| Others |
| LSO | Line Scaning Opthalmoscope
| Others |
| LSO | Linguistics Student Organization
| Others |
| LSO | Linux Standards Organization
| Others |
| LSO | List of Stored Options
| Others |
| LSO | Livingston Symphony Orchestra
| Others |
| LSO | Local Security Officer
| Others |
| LSO | Local Service Organization
| Others |
| LSO | Local Serving Office
| Others |
| LSO | Local Shared Object
| Others |
| LSO | Local Shared Objects
| Others |
| LSO | Local Storage Option
| Others |
| LSO | Locally Shared Object
| Others |
| LSO | Logical Structure of Objectivism
| Others |
| LSO | Logistics Service Optimisation
| Others |
| LSO | London Symphony Orchestra
| Others |
| LSO | London Symphony Orchestra's
| Others |
| LSO | Londontowne Symphony Orchestra
| Others |
| LSO | Lone Star Overnight
| Others |
| LSO | Long Suffering One
| Others |
| LSO | Longwood Symphony Orchestra
| Others |
| LSO | Louisiana Southern Railway
| Others |
| LSO | Low Speed Output
| Others |
| LSO | Lubbock Symphony Orchestra
| Others |
| LSO | Lumbar Sacral Orthosis
| Others |
| LSO | Luscious Slovenian Octet
| Others |
| LSO | Lutetium OxyorthoSilicate
| Others |