| Acronym | Definition |
|---|
| ISTG➣Immigrant Ships Transcribers Guild |
| ISTG➣Inter-Site Topology Generator |
| ISTG➣Implicit State Transition Graph |
| ISTG➣Information Storage Technology Group (University of Twente; Netherlands) |
| ISTG➣Integrated Systems Tech Group (Tampa, FL) |
| ISTG➣Innovative Science and Technology Group (est. 2006) |
| ISTG➣I Swear to God |