| Acronym | Definition |
|---|
| LGS➣Light Green Seal (currency) |
| LGS➣Local Gun Store |
| LGS➣Loughborough Grammar School (UK) |
| LGS➣Lane Guard System |
| LGS➣Lennox-Gastaut Syndrome |
| LGS➣Lead Generation Specialist (communications position) |
| LGS➣Leaky Gut Syndrome |
| LGS➣Langley Grammar School (UK) |
| LGS➣Laser Guide Star |
| LGS➣Lauriston Girls' School (Australia) |
| LGS➣Light Gauge Steel (steel frame construction system) |
| LGS➣Lodi Gas Storage (Houston, TX) |
| LGS➣Langer-Giedion Syndrome |
| LGS➣Louisiana Geological Society (est. 1934) |
| LGS➣Law, Gender and Sexuality |
| LGS➣Looking Glass Studios (game development company) |
| LGS➣Local Game Store (roleplaying) |
| LGS➣Low Growth Scenario (economic model) |
| LGS➣Loan Guarantee Scheme (UK) |
| LGS➣Light Gasoline Splitter (petroleum industry) |
| LGS➣Large Group Speech (various organizations) |
| LGS➣La Garde Suisse (French: Swiss Guard) |
| LGS➣Low-Gravity Solids (oilfield) |
| LGS➣Licensed Gun Store |
| LGS➣Landsat-7 Ground Station |
| LGS➣Legislation et Gestion Scolaire |
| LGS➣Lets Get Serious |
| LGS➣Louisiana Geriatrics Society |
| LGS➣Layered Gene Scanning |
| LGS➣Ladybird Grammar School (Karachi, Pakistan) |
| LGS➣Location Grouping System |
| LGS➣Location-Guided Steiner Tree |
| LGS➣Lunar Geodetic Scout |
| LGS➣Low-Grade Stockpile (mining) |