| La Salle Institute | Academic & Science |
| Liver Somatic Index | Academic & Science |
| Language Systems International | Academic & Science |
| Language Studies International | Academic & Science |
| Low-Speed Internal Clock | Academic & Science |
| Langelier Saturation Index | Academic & Science |
| Shetland Islands | Airport Code |
| Long-String Instrument | Arts |
| Love Sex Intelligence | Arts |
| Lynch Syndrome International | Associations & Organizations |
| Labour and Socialist International | Associations & Organizations |
| Lear Siegler Incorporated | Business |
| L S I Logic Corporation | Business |
| Lake Street Industries | Business |
| Link Snack Incorporated | Business |
| Lightning Source Incorporated | Business |
| Lifeline Sci. S | Business |
| Lord Steel Industry Company Ltd | Business |
| Lighting Services Inc | Business |
| Lenders Service Inc | Business |
| Lone Star Institute | Business |
| Life Storage Inc | Business |
| Landscape Services Inc | Business |
| Logistic Specialties Inc | Business |
| Lending Solutions Inc | Business |
| Lubrication Specialties Inc | Business |
| Litigation Solutions Inc | Business |
| Logistics System Information | Business |
| Luminescent Systems Inc | Business |
| Lakeville Sanitary Inc | Business |
| Lingkaran Survei Indonesia | Business |
| Langier Saturation Index | Chemistry |
| Lutheran Services in Iowa | Community |
| Leadership Strength and Innovation | Community |
| Leadership and Strategic Impact | Community |
| Looks Standard Inside | Computing |
| Licensed Server Implementations | Computing |
| Listing Site Inspection | Computing |
| Local Storage Systems Inc. | Computing |
| Latent Semantic Indexing | Database Management |
| Local Secondary Indexes | Database Management |
| Landing Ship Infantry | General |
| Large Scale Ingrate | General |
| Luxury Super Injection | General |
| Left Side Impact | General |
| Leather Sport Interior | General |
| Low Speed Impact | General |
| Livestock Insurance | General |
| LoL Summoner Information | General |
| Load Systems International | General |
| Land Surface Imaging | General |
| Large Spark Ignition | General |
| Level of Service Inventory | General |
| Life Styles Inventory | General |
| Local Service Interface | General |
| Lasallian Service Internship | General |
| Langlier Saturation Index | General |
| Liquidity Stress Index | General |
| Latest Semantic Indexing | General |
| Large Scale Integrated | General |
| Linguistic Survey of India | Governmental |
| Landscape Shape Index | Governmental |
| Level of Supervision Inventory | Governmental |
| Learning Systems Institute | Governmental |
| Legal Secretaries Inc | Governmental |
| Learning Sciences Institute | Governmental |
| Life Sciences Institute | Governmental |
| Lab Safety Institute | Governmental |
| Leader Scholars Institute | Governmental |
| Lëvizja Socialiste për Integrim | Governmental |
| LAHERIA SARAI | Indian Railway Station |
| Large-Scale Integration | Information Technology |
| Learning Systems International | International |
| Learning Sciences International | International |
| Logistic Services International | International |
| Land Surveyor Intern | Jobs |
| Legal Secretaries Incorporated | Maths |
| Large Spark Ignited | Measurement Unit |
| last subject in | Medical |
| Lead Systems Integrator | Military and Defence |
| Lake Superior and Ishpeming Railroad Company | Regional |
| Sumburgh, Scotland, UK | Regional |
| Lake Superior and Ishpeming Railroad | Regional |
| Loop Start Interface | Telecommunication |
| Sumburgh Airport | Transport & Travel |
