| Acronym | Definition |
|---|
| GESI➣Gender Equality and Social Inclusion (various organizations) |
| GESI➣Global E-Sustainability Initiative (Brussels, Belgium; climate change; resources sustainability) |
| GESI➣Graham Environmental Sustainability Institute (University of Michigan) |
| GESI➣Global Environmental Sanitation Initiative |
| GESI➣Global Earthquake Safety Initiative (Geohazards International) |
| GESI➣Global Emissions Systems Inc. (Whitby, Ontario, Canada) |
| GESI➣Gas Equipment Systems Inc. (Rancho Cucamonga, CA) |