| Acronym | Definition |
|---|
| LSO➣London Symphony Orchestra |
| LSO➣Lesotho (ISO Country code) |
| LSO➣Legislative Service Office (various locations) |
| LSO➣Law Society of Ontario (est. 1792; Ontario, Canada) |
| LSO➣Lumbar Sacral Orthosis |
| LSO➣Local Serving Office |
| LSO➣Local Storage Option |
| LSO➣Local Shared Object |
| LSO➣Lubbock Symphony Orchestra (Lubbock, TX) |
| LSO➣Laser Safety Officer |
| LSO➣Landing Signal Officer |
| LSO➣Local Safety Officer (various locations) |
| LSO➣Large Send Offload |
| LSO➣Last Sunday in October (daylight savings time adjustment) |
| LSO➣Lutetium Oxyorthosilicate (chemistry) |
| LSO➣Longwood Symphony Orchestra (Brookline, MA) |
| LSO➣Latent Semantic Optimization (computing) |
| LSO➣Lone Star Overnight (Austin, TX) |
| LSO➣Local Search Optimization |
| LSO➣Local Shared Objects (web browsers) |
| LSO➣Learning Support Organization |
| LSO➣Landing Support Officer (US NASA) |
| LSO➣Landing Safety Officer |
| LSO➣Large Solar Observatory |
| LSO➣Legal Services Office (Montana) |
| LSO➣Legal Support Organization |
| LSO➣Left Salpingo-Oophorectomy |
| LSO➣Lifestyles Organization |
| LSO➣Lead Service Office |
| LSO➣Legal Staff Officer (various locations) |
| LSO➣Liberty Symphony Orchestra (Liberty, MO) |
| LSO➣Linux Standards Organization |
| LSO➣Lansdowne Symphony Orchestra (Lansdowne, PA) |
| LSO➣Littleton Symphony Orchestra (Littleton, CO) |
| LSO➣Leveraged Sell-Out |
| LSO➣Logistics Support Officer |
| LSO➣Lovaniensis Scientificus Ordo (Louvain-la-Neuve, Belgium) |
| LSO➣Local Switching Office |
| LSO➣Legislative Service Organization |
| LSO➣cerium doped lutetium orthosilicate |
| LSO➣Lawson Smart Office |
| LSO➣Local Servicing Office |
| LSO➣Labor Standards Officer |
| LSO➣Limited Service Offering |
| LSO➣Linked Simulation-Optimization |
| LSO➣Local Service Organization |
| LSO➣Large-Scale Offensive (aggressive strategy) |
| LSO➣Large Scale Organization |
| LSO➣Linguistic Sign-Off |
| LSO➣Life Support Officer |
| LSO➣LAN Systems Organization (Intel) |
| LSO➣Landward Security Officer |
| LSO➣Licensed Security Officer |
| LSO➣List of Stored Options |
| LSO➣Learning Session Outline (education) |
| LSO➣Lanarkshire Society of Organists (UK) |
| LSO➣Laser Squad Orlando (Florida) |
| LSO➣Ladies Social Outreach |