| Abbreviation | Definition |
|---|---|
| LSD | Lighting and Sound Design |
| LSD | Loytec System Diagnostics |
| LSDC | Leah Stein Dance Company |
| LSDC | Lua Shayenne Dance Company |
| LSDS | Lone Star Driver Safety |
| LSE | Legally Separate Entity |
| LSE | Lillie Smith Enterprises |
| LSFC | Lao State Fuel Company |
| LSI | Lake Street Industries |
| LSI | Landscape Services Inc |
| LSI | Lenders Service Inc |
| LSI | Lending Solutions Inc |
| LSI | Life Storage Inc |
| LSI | Lighting Services Inc |
| LSI | Lightning Source Incorporated |
| LSI | Link Snack Incorporated |
| LSI | Litigation Solutions Inc |
| LSI | Logistic Specialties Inc |
| LSI | Lone Star Institute |
| LSI | Lord Steel Industry Company Ltd |