| Acronym | Definition |
|---|
| ITRG➣Information Technology Research Group (various universities) |
| ITRG➣Imaging Technology Research Group |
| ITRG➣Information Technical Requirement Group |
| ITRG➣Interoperability Technical Review Group |
| ITRG➣Infotrends Research Group, Inc. |
| ITRG➣Information Technology Restructuring Group (Arlington, VA) |