| Abbreviation | Definition |
|---|---|
| GIF | Graphics Interchange Format |
| GIF89a | Graphics Interchange Format number 89A |
| GIFB | Grand Isle Fire Brigade |
| GIFT | Geometric Information For Targets |
| GIG | Global Information Grid |
| GIG | Graphical Information Gyro |
| GIG-BE | Global Information Grid - Bandwidth Expansion |
| GIGO | Garbage In Garbage Out |
| GII | Global Information Infrastructure |
| GILS | Global Information Locator System |
| GIP | Gridded Installation Photograph |
| GIParty | Army way of saying a big cleanup (not an acronym) |
| GIPSY | Graphic Information Presentation System |
| GIS | Geographic Information System |
| GIS | Geographical Information System |
| GIS | Government Information System |
| GIS-R | (The Army's) Geographic Information System Repository |
| GIST | Graphic Intelligence Support Terminal |
| GIT | Gender Integrated Training |
| GITIS | Ground Integrated Target Identification System |