| Galvanized Mild Steel | Academic & Science |
| Glen Mills Schools | Academic & Science |
| Gate Millennium Scholar | Academic & Science |
| Graphical Modeling System | Academic & Science |
| Great Marlow School | Academic & Science |
| Geostationary Meteorology Satellite | Academic & Science |
| Goethals Memorial School | Academic & Science |
| Greenbrier Military School | Academic & Science |
| Gross Merchandise Sales | Accounts and Finance |
| Guimaraes | Airport Code |
| Guild Message System | Business |
| Grant Management Solutions | Business |
| Grants Management System | Business |
| Georgetown Management System | Business |
| Gypsum Management and Supply | Business |
| Group Management Services | Business |
| Grants Management Systems | Business |
| Gemtec Machinery Systems | Business |
| Gender Mainstreaming | Business |
| Game Marketing Summit | Business |
| Get More Sales | Business |
| Grand Marketing Solutions | Business |
| General Management System | Business |
| Game Management System | Business |
| Gypsum Management Supply | Business |
| Gas Management System | Business |
| General Measurement System | Business |
| Global Management Systems | Business |
| Gambetta Middle School | Community |
| Greeneville Middle School | Community |
| Grassland Middle School | Community |
| Gilford Middle School | Community |
| Goochland Middle School | Community |
| Gallagher Middle School | Community |
| Grapevine Middle School | Community |
| Glenwood Middle School | Community |
| Gorzycki Middle School | Community |
| Goyishe Music Service | Community |
| Galvez Middle School, Galvez, Louisiana | Community |
| Grant Maintained School | Community |
| Gardner Middle School | Community |
| Garfield Middle School | Community |
| Germantown Middle School | Community |
| Glennville Middle School | Community |
| Gregg Middle School | Community |
| Greenwood Middle School | Community |
| Griffin Memorial School | Community |
| Globalization Management System | Computing |
| Gamemode Survival | Computing |
| Garp Modeling System | Computing |
| Global Mobile System | Computing |
| Global Messaging Service | Computing |
| Global Macro Storage | Computing |
| Group and Session Management System | Computing |
| Group Membership Services | Computing |
| Google Message Security | Computing |
| Google Marketing Solutions | Computing |
| Google Mobile Services | Computing |
| Games Management System | Computing |
| Grid Based Motion Statistics | Computing |
| Google Maps Scraper | Computing |
| Greater Mekong Sub-region | Country Specific |
| GameStar | Cryptocurrency |
| Groundwater Modeling System | General |
| Generalized Motion Simulation | General |
| Great Mekong Sub | General |
| General Multi System | General |
| Great Mutant Skywheel | General |
| The Gordano Messaging Suite | General |
| Gemtec Machinery Services | General |
| George Muscolino And Sons | General |
| Guided Microwave Spectrometer | General |
| Global Mobility Specialist | General |
| Genral Motors Supplier | General |
| Gilsanz Murray Steficek | General |
| Grand Master Series | General |
| Give Me Strength | General |
| Group Main Stream | General |
| Geostationary Meterological Satellite | General |
| Google Moble Service | General |
| Greater Maekong Sub | General |
| Groovy Male Stud | General |
| Gully Man Screaming | General |
| G Men Starship | General |
| Growling Mad Scientists | General |
| General Mail System | General |
| Gates Millennium Scholars | General |
| Grocott Methenamine Silver | General |
| Groove Machine Synthesizer | General |
| General Mechanic Services | General |
| Global Mobility Solutions | General |
| Graz Malnutrition Screening | General |
| General Micro Systems | General |
| Gold Monetization Scheme | General |
| Glycerol Mono Sterate | General |
| Geneva Motor Show | General |
| Global Manufacturing System | General |
| Green Machine Sport | General |
| Gas Modified Sports | General |
| Global Model Sedan | General |
| Gearbox Mariagerrierir System | General |
| Gearbox Management System | General |
| General Motors Suisse | General |
| Global Mobility Service | General |
| Goodlink Migration Services | General |
| Grant Management System | General |
| Good Morning Sunshine | General |
| Global Mobility Services | General |
| Geotech Monitoring Station | General |
| Gozeamon Masunaga Spectacle | General |
| Growth Management Services | Governmental |
| Global Management System | Governmental |
| GARHMUKTESAR | Indian Railway Station |
| Gomori Methenamine Silver | Medical |
| Genome Modeling System | Medical |
| Good Man Syndrome | Medical |
| Gomori Methenamine Silver stain | Medical |
| Global Mood Scale | Medical |
| glyceryl monostearate | Medical |
| Geriatric Mental State | Medical |
| Graduate Medical Sciences | Medical |
| General Medical Services | Medical |
| Global Mobility Squadron | Military and Defence |
| Geo-stationary Meteorological Satellite | Military and Defence |
| Good Morning Scotland | News & Entertainment |
| Guimaraes, MA, Brazil | Regional |
| Glycerol monostearate | Society & Culture |
| Golf Maintenance Solutions | Sports |
| Games Master System | Sports |
| Geographic Messaging Service | Technology |
