G †
- Gbps(Gigabits per Second)
- GHz(gigahertz)
- GLONASS(Global Navigation Orbiting Satellite System:全地球航法衛星システム)
- GMDSS(Global Maritime Distress and Safety System:全世界海上遭難安全システム)
- GMDSS設備
- GMSK(Gaussian Filtered Minimum Shift Keying)
- GNSS(Global Navigation Satellite System)
- GPKI(Government Public Key Infrastructure)
- GPS(Global Positioning System)