| Acronym | Definition |
|---|
| IGRS➣Institute of Germanic and Romance Studies (UK) |
| IGRS➣Intelligent Grouping and Resource Sharing |
| IGRS➣image-guided radiosurgery |
| IGRS➣IPEDS (Integrated Postsecondary Education Data System) Graduation Rate Survey |
| IGRS➣Irish Genealogical Research Society (UK) |
| IGRS➣Iraqi Geospatial Reference System |
| IGRS➣Integrated Gas Recovery Services Inc. (Thorold ON, Canada) |
| IGRS➣Integrated GPS Radio System (developed by Stanford Research Institute) |
| IGRS➣Illiana Garden Railway Society |
| IGRS➣Information Gateway Resource Sharing |
| IGRS➣Information Group Resource System |
| IGRS➣Information Gathering and Retrieval System (US IRS) |
| IGRS➣IronWood Guide to Railway Safety |
| IGRS➣imidazoline-guanidinium receptive site (membrane-bound protein) |
| IGRS➣Infant Gastric Reflux Stories (New Zealand) |
| IGRS➣Intelligence and Geographic Resources Staff (UK MoD) |
| IGRS➣Irish Graves Registration Society |
| IGRS➣Intergovernmental Review System |
| IGRS➣Iron Gate Reservoir Surface |