| Abbreviation | Definition |
|---|---|
| GeMCRIS | Genetic Modification Clinical Research Information System (NIH) |
| GEO | Genetically-Engineered Organism |
| GEP | Good Engineering Practice |
| GF | Gluten-Free |
| GG | Goal Group |
| GGP | Good Guidance Practice |
| GHC | Group Health Co-operative |
| GHDB | General Hospital Devices Branch |
| GHDB(CDRH) | General Hospital Devices Branch (CDRH) |
| GHS | Globally Harmonised System of Classification and Labelling of Chemicals |
| GHTF | Global Harmonization Task Force |
| GI | Gastro-Intestinal |
| GINAD | Generic Investigational New Animal Drug file |
| GIPSA | Grain Inspection, Packers & Stockyards Administration (USDA) |
| GIPSA | Grain Inspection, Packers, & Stockyards Administration |
| GLP | Good Laboratory Practice |
| GLPBB | Good Laboratory Practices and Bioequivalence Investigations Branch |
| GLPBB(CDER) | Good Laboratory Practices and Bioequivalence Investigations Branch (CDER) |
| GM | Genetically-Modified |
| GMA | Grocery Manufacturers Association |