| Acronym | Definition |
|---|
| MGB | Manual Gearbox |
| MGB | Metro Group Buying (Hong Kong) |
| MGB | Mini-Gastric Bypass |
| MGB | Matsuno Glass Beads (Japan) |
| MGB | May God Bless |
| MGB | Minor Groove Binder (molecular biology) |
| MGB | Matthew Good Band |
| MGB | Medial Geniculate Body |
| MGB | Motor Gun Boat |
| MGB | Medium Girder Bridge |
| MGB | Main Gear Box |
| MGB | Mobile Garbage Bin |
| MGB | Microsoft Global Briefing |
| MGB | Match Grade Barrel (ammunition) |
| MGB | Magandang Gabi Bayan (Good Evening Nation, Philippine TV newsmagazine) |
| MGB | Mini-GameBoy (gaming system) |
| MGB | Mass Group Buff (gaming) |
| MGB | Missile Gunboat |
| MGB | Mysterious Blue Guy |
| MGB | Master Ground Bar |
| MGB | Main Ground Bus |
| MGB | Morris Garage Model B (vehicle) |
| MGB | Machine Gun Blow (gaming) |
| MGB | Model of Goal-Directed Behavior |
| MGB | Mills-Godwin Building (Old Dominion University; Norfolk, VA) |
| MGB | Main Grocery Buyer (market research) |
| MGB | Metal Graphite Brush |
| MGB | Miller's Gas Bicycles (St. Louis, MO) |
| MGB | Mardergraphics Berlin |
| MGB | Monolithic Glass Block |