SIWG
| 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 |