GRI
- Central Nebraska Regional Airport
- GABA reuptake inhibitor
- Gas Research Institute
- General Rules for the Interpretation of the Harmonized System
- Georgius Rex Imperator (disambiguation)
- Geoscience Research Institute
- Getty Research Institute
- Ghari language
- Glasgow Royal Infirmary
- Global Reporting Initiative
- Global Retirement Index
- Global Rights Index
- Global Risk Institute
- Glycine reuptake inhibitor
- Grainger plc
- Grand Island Army Air Field
- GrassRoots Interactive
- Green River (Amtrak station)
- Gri graphical language
- Gypsum Recycling International