| Acronym | Definition |
|---|
| SISG➣Site Investigation Steering Group (UK) |
| SISG➣Security and Intelligence Studies Group (UK Political Studies Association) |
| SISG➣Summer Institute in Statistical Genetics (University of Washington; Seattle, WA) |
| SISG➣SIDAC/IGBT Spark Gap |
| SISG➣Superconducting Image Surface Gradiometry |
| SISG➣Scientific Instruments and Sensors on the Grid (Workshop) |
| SISG➣School Improvement Strategy Group (UK) |