| Acronym | Definition |
|---|
| MEG | Mega- (Million) |
| MEG | Magnetoencephalography |
| MEG | Meta Event Generator |
| MEG | Mono Ethylene Glycol |
| MEG | Magnetoencephalogram |
| MEG | Metals Economics Group |
| MEG | Motionless Electromagnetic Generator |
| MEG | Metropolitan Enforcement Group |
| MEG | Metadata for Education Group (UK) |
| MEG | Multi-Employer Group (hotels) |
| MEG | Maverick Entertainment Group, Inc. (Deerfield Beach, FL) |
| MEG | Mean Effective Gain |
| MEG | Mobile Expert Group (OSGi Alliance) |
| MEG | Middle East and Gulf |
| MEG | Modeling Language Environment Generator (computing) |
| MEG | Marketing Educators Group |
| MEG | Military Exposure Guideline |
| MEG | Mocha Entertainment Group, Inc (Los Angeles, CA) |
| MEG | Minimum Expected Grade (UK education) |
| MEG | Matrix Element Generator |
| MEG | Mega Event Generator (Cisco) |
| MEG | MEF (Marine Expeditionary Force) Engineer Group (USMC) |
| MEG | Micro Enterprise and Training Development Grant (Trinidad & Tobago) |
| MEG | Maintenance Engineering Group |
| MEG | Management Evaluation Guide |
| MEG | Marine Equipment Buyers' Guide |
| MEG | Message Entry Generator |
| MEG | Medical Evaluation Guide (US FEMA) |
| MEG | Mining and Environmental Geology (University of Venda; est. 2000; South Africa) |