GIIS
| Acronym | Definition |
|---|---|
| GIIS | Global Indian International School (Singapore) |
| GIIS | Grid Index Information Service |
| GIIS | Global Information Infrastructure Symposium (IEEE Symposium) |
| GIIS | Georgia Insurance Information Service (trade association; Marietta, GA) |
| GIIS | General Instrument Interface Specification |
| GIIS | General Insurance Information System |
| GIIS | Global Information and Intelligence Project Group (trade) |