| Acronym | Definition |
|---|
| SIWG➣Structural Integrity Working Group |
| SIWG➣Simulation Interoperability Working Group |
| SIWG➣Synthetic Instrument Working Group (test system technology design group) |
| SIWG➣Southern Illinois Writers Guild (Carterville, IL) |
| SIWG➣Special Interest Working Group |
| SIWG➣Science Instrument Working Group |
| SIWG➣Survivability Integration Working Group |