- g – gramme(s)
- G – gendarmerie
- GAMA – Gun Automatic Multiple Ammunition
- GAO – General Accounting Office
- GAP – Gun Aiming Post
- GBAD – Ground Based Air Defence
- GCE – gun control equipment
- GCT – Grande Cadence de Tir (high rate of fire)
- GCU – Gun Control Unit
- GCW – Gross Combat Weight
- GD – General Dynamics
- GDLS – General Dynamics Land Systems
- GDU – Gun Display Unit
- GFE – Government Furnished Equipment
- GH – gun-howitzer
- GIAT – Groupement Industriel des Armements Terrestres
- GL – Grenade Launcher
- GLATGM – Gun Launched Anti-Tank Guided Missile
- GLC – gun lay computer
- GLDNSM – Grenade Launcher Day-Night Sight Mount
- GLH-H – Ground-Launched Hellfire-Heavy (US)
- GLLD – Ground Laser Locator Designator (US)
- GLS – Gesellschaft für Logistischen Service
- GM, MVO – General Motors, Military Vehicle Operations
- GMC – General Motors Corporation
- GMG – Grenade Machine Gun
- GMLRS – Guided Multiple Launch Rocket System
- GMS – Gun Management System
- GOCO – government-owned, contractor-operated (US)
- GOP – General Out Post
- GP – General Purpose
- GP – guided projectile
- GPMG – General Purpose Machine Gun
- GPO – gun position officer
- GPS – Global Positioning System
- GPS – gunner's primary sight
- GPSS – Gunner's Primary Sight Subsystem
- GREM – Grenade Rifle Entry Munition
- GRU – Glavnoe Razvedyvatel'noe Upravlenie, meaning Main Intelligence Directorate
- GSR – General Staff Requirement (US)
- GSRS – General Support Rocket System
- GST – General Staff Target
- GST – Gesellschaft fьr System-Technik
- GTCS – Gun Test and Control System
- GTI – German Tank Improvement
- GVW – Gross Vehicle Weight
- GW – guided weapon
Read more about this topic: Glossary Of Military Abbreviations