| Abbreviation | Definition |
|---|---|
| GMRI | Gated Magnetic Resonance Imaging |
| GMTI | Global Magnetization Transfer Imaging |
| GN | Gaussian Noise |
| GNSS | Global Navigation Satellite System |
| GOD | Geometrical Oriented Dynamics |
| GP | General Physics |
| GPE | Geosciences Physics Engineering |
| GPH | Gas Permeable Hollow |
| GPRT | Geometry Physics and Representation theory |
| GPT | Gabidulin Paramonov and Trietakov |
| GPU | Georgia Physics Unintelligible |
| GR | General Relativity |
| GR | Gunning Refractory |
| GRAIL | Gravity Recovery and Interior Laboratory |
| GRaND | gamma ray and neutron detector |
| GRASP | General Robotics and Active Sensory Perception |
| GRASP | Girls Reaching to Achieve in Sports and Physics |
| GRASP | Girls Reaching to Achieve in Sports Physics |
| GRASP | Graphical Representation and Analysis of Surface Properties |
| GRF | Gaussian Random Force |