| G-DEST | General License-Destination 
| Others |
| G-E | Grazing-Exit
| Others |
| G-G | Ground-to-Ground
| Others |
| G-GPRF | Gradient General Purpose Rocket Furnace
| Others |
| G-II | Gulfstream II (Shuttle Training Aircraft)
| Others |
| G-IMS | Government-led International Monetary System
| Others |
| G-JOBS | Jobs for Georgia Graduates
| Others |
| G-LOC | G-induced Loss Of Consciousness
| Others |
| G-MED (LNE) | Groupfor Medical Device Assessment (Laboratoire National de Metrologie et d'Essias)
| Others |
| G-MEM | General MEMory
| Others |
| G-Men | Government Agents
| Others |
| G-RAP | Ghana Research and Advocacy Programme
| Others |
| G-RNG | Gas Range
| Others |
| G-SOK | Golf Sock
| Others |
| G-TUBE | Gastrostomy Tube (feeding tube)
| Others |
| G-V | Gravity Velocity
| Others |
| G-WAAT | Global Wide Area Application Testbed
| Others |
| G.C.B. | Knight Grand Cross, Order of the Bath
| Others |
| G.M. | George Medal (British)
| Others |
| G.O.A.T. | Greatest Outback of All Time
| Others |
| G.P% | Gross Profit%
| Others |
| G.P.R.S | Go Process Reasonable Sensitivity
| Others |
| G.R.I. | General Rules of Interpretation
| Others |
| G.T.M.A.A. | Greater Toronto Multiple Alarm Association
| Others |
| G.T.T.B.A. | Greater Toronto Tenpin Bowling Association
| Others |
| G.W.S | Get Well Soon
| Others |
| G/A | General Average
| Others |
| G/A | Ground to Air
| Others |
| G/C | Gradient-to-Cooling ratio
| Others |
| g/dl | grams per deciLiter
| Others |
| G/E | Graphite Epoxy
| Others |
| G/F | Good Obverse, Fine Reverse
| Others |
| G/FC | Gym/Fitness Center
| Others |
| G/S | Guided Steering
| Others |
| G/T | Gain-to-noise Temperature ratio
| Others |
| G/VF | Good Obverse, Very Fine Reverse
| Others |
| G/VG | Good Obverse, Very Good Reverse
| Others |
| G/VLLD | Ground Vehicular Laser Locator Designator
| Others |
| G/VLLD | Ground/vehicle Laser Locator Designator
| Others |
| G/W | Ground Wave
| Others |
| G0 | AGCCS Workstation Class Computer
| Others |
| G1 | Generation 1
| Others |
| G1 | Personnel and Administration Staff at Corps and Division
| Others |
| G11 | Group of 11
| Others |
| G11N | Globalization
| Others |
| G12H | Gulf Twelve Hours
| Others |
| G14 | G8 nations (Canada, France, Germany, Italy, Japan, the United Kingdom, the United States, and Russia) plus 5 (Brazil, China, India, Mexico, and South Africa) plus Egypt.
| Others |
| G16 | Compiled config (GoldED for DOS)
| Others |
| G18 | Glock pistol model 18
| Others |
| G1G1 | Give One Get One
| Others |