| 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) |