| G&MG | Gog & Magog 
| Others |
| GMG | Gartland Mellina Group
| Others |
| GMG | Gas Mileage
| Others |
| GMG | Gas Monkey Garage
| Others |
| GMG | Generalized Myasthenia Gravis
| Others |
| GMG | Geneva Management Group
| Others |
| GMG | Geomechanics and Mitigation of Geohazards
| Others |
| GMG | Georgia Marketing Group
| Others |
| GMG | Get Money Gang
| Others |
| GMG | Girl Meets Girl
| Others |
| GMG | Give Myself gifts
| Others |
| GMG | Glades Media Group
| Others |
| GMG | Global Management Group
| Others |
| GMG | Global Migration Group
| Others |
| GMG | Global Mining Guidelines
| Others |
| GMG | Global Motorsport Group
| Others |
| GMG | Global Motorsports Group
| Others |
| GMG | Global Music Group
| Others |
| GMG | Go Mustang Go
| Others |
| GMG | Golden metal gaming
| Others |
| GMG | Good for Midwestern Grub
| Others |
| GMG | Good Magic Guild
| Others |
| GMG | Gorilla Marketing Group
| Others |
| GMG | Gornichts Mit Gornichts (Absolutely Nothing)
| Others |
| GMG | Government Manufacturing Group
| Others |
| GMG | Granada Media Group
| Others |
| GMG | Granatmaschinengewehr Meaning Grenade
| Others |
| GMG | Grand Magic Games
| Others |
| GMG | Grand Marquis Gs
| Others |
| GMG | Great Mayor Galore
| Others |
| GMG | Greater Mankato Growth
| Others |
| GMG | Green Man Gaming
| Others |
| GMG | Green Man Gamingneverlieshttps
| Others |
| GMG | Green Mountain Grills
| Others |
| GMG | Greenspun Media Group
| Others |
| GMG | Grenade Machine Gun
| Others |
| GMG | Grind My Gears
| Others |
| GMG | Growing More Greater
| Others |
| GMG | Guardian Media Group
| Others |
| GMG | Guerrilla Miniature Games
| Others |
| GMG | Gulf Marketing Group
| Others |
| GMG | Gun Metal Grey
| Others |
| GMG | Guy Meets Girl
| Others |