| Acronym | Meaning |
 | GG | Georgia (FIPS 10-4 Country Code) |
| GGP | General Game Playing |
| GH | Ghana (ISO 3166 Digram; FIPS 10-4 Country Code) - Gigahenry |
| GHA | Ghana (ISO 3166 Trigram) |
| GHB | Gamma-HydroxyButyrate |
| GHC | Ghanan Cedi (ISO 4217 Currency Code) |
| GI | Galvanised Iron - Gastro-Intestinal - General Issue -Gibraltar (ISO 3166 Digram; FIPS 10-4 Territory Code) -Government Issue |
| GI | Gibi |
| GIB | Gibraltar (ISO 3166 Trigram) |
| GIF | Graphics Interchange Format (pronounced Jif) |
| GIG | Global Information Grid |
| GIGO | Garbage In Garbage Out (computing) |
| GIMP | GNU Image Manipulation Program |
| GIN | Guinea (ISO 3166 Trigram) -Guidelines International Network |
| GINO | Godzilla In Name Only |
| GIP | Gibraltar Pound (ISO 4217 Currency Code) |
| GIS | Geographic Information System -Google Image Serach |
| GISS | General Impression Of Size And Shape - Goddard Institute For Space Studies |
| GJ | Gigajoule - Grenada (FIPS 10-4 Country Code) |
| GJD | Geocentric Julian Day |
| GK | Gigakelvin - Guernsey (FIPS 10-4 Territory Code) |
| GL | Galician Language (ISO 639-1 Code) |
| GL | Gigalitre -Graphics Language -Greenland (ISO 3166 Digram; FIPS 10-4 Territory Code) -Grenade Launcher |
| GLA | Scottish Gaelic Language (ISO 639-2 Code) |
| GLAAD | Gay And Lesbian Alliance Against Defamation |
| GLAC | General Ledger Accounting Code |
| GLAST | Gamma-ray Large Area Space Telescope |
| GLBA | Gramm-Leach-Bliley Act |
| GLC | Gas-liquid Chromatography |
| GLE | Irish Language (ISO 639-2 Code) |
| GLG | Galician Language (ISO 639-2 Code) |
| GLINT | Gallium-arsenide Laser Illuminator For Night TV - Gated Laser Illuminator For Narrow Television -Gated Laser Intensifier (tape) - Gospel Literature International - Graphical Linux Installation Tool |
| GLP | Guadeloupe (ISO 3166 Trigram) |
| GLUT | OpenGL Utility Toolkit |
| GLV | Gained Life Value |
| GLV | Manx Language (ISO 639-2 Code) |
| GM | Gigametre |
| GM | The Gambia (ISO 3166 Digram) -GameMaster (role-playing) - General Motors - Genetically Modified -Germany (FIPS 10-4 Country Code) -Guru Meditation (computing) |
| GMB | The Gambia (ISO 3166 Trigram) -General |
| GMBH | Gesellschaft Mit Beschr?nkter Haftung (German |
| GMC | U.K. General Medical Council |
| GMD | Gambian Dalasi (ISO 4217 Currency Code) |
| GMFSC | Ground Mobile Forces Satellite Communications |
| GMI | Generic Model Interface - Geometry Model Instance |
| GML | Game Maker Language - Generalized Markup Language - Geography Markup Language - Graph Modelling Language - Graphical Motion Language - GUI Markup Language |
| GMO | Genetically Modified Organism |
| GMPCS | Global Mobile Personal Communications By Satellite |
| GMT | Giant Magellan Telescope - Greenwich Mean Time |
| GN | Giganewton - Guinea (ISO 3166 Digram) |
| GN | Guaran Language (ISO 639-1 Code) |
Browse by Letter:
