GEF
GEF or Gef may refer to:
Organisations
- Global Enrichment Foundation
- Global Environment Facility, international partnership and funder of projects to improve the global environment
- Green European Foundation, foundation of the European Green Party.
Others
- Gef, the talking mongoose, a famed poltergeist story from the Isle of Man
- Graphical Editing Framework
- Guanine nucleotide exchange factor, activators of G proteins