| Acronym | Definition |
|---|
| LGM | Longmont (Amtrak station code; Longmont, CO) |
| LGM | Last Glacial Maximum |
| LGM | Let's Get Married |
| LGM | Let's Go Mets (New York Mets) |
| LGM | Little Green Men (Astronomical: first used as the designation for pulsars) |
| LGM | Lembaga Getah Malaysia (Malay: Malaysian Rubber Board) |
| LGM | The Lone Gunmen (X-Files) |
| LGM | Leadership, Governance and Management (UK) |
| LGM | Lawful General Merchandise (shipping industry) |
| LGM | Laser Guided Missile |
| LGM | Les Gouvernements Municipaux (French: The Municipal Governments) |
| LGM | Logistics & Maintenance |
| LGM | Loop Group Multiplexer |
| LGM | Low-Grade Moron |
| LGM | Liftgate Module (General Motors) |
| LGM | Laser Guided Munitions |
| LGM | Lieutenant Governor for Marketing |
| LGM | Ground Launched Missile (military missile designation) |
| LGM | Linear Gauss-Markov |
| LGM | Linearized Green-Function Method |
| LGM | Logistics Guidance Memorandum |
| LGM | Localization Group Manager |