GHSI
| Acronym | Definition |
|---|---|
| GHSI | Global Health and Security Initiative |
| GHSI | Genevois Haut Savoyard Initiative (est. 1997; financial tool; France) |
| GHSI | Group Hospitalisation and Surgical Insurance (Singapore) |
| GHSI | Goshen Humane Society Inc. (Goshen, NY) |
| GHSI | Gray Hawk Systems, Inc. (defense industry; Alexandria, VA) |