| Acronym | Definition |
|---|
| ISWG➣Interagency Sustainability Working Group |
| ISWG➣Invasive Species Working Group |
| ISWG➣Import Safety Working Group (trade) |
| ISWG➣Information Systems Working Group |
| ISWG➣Imperial Standard Wire Gauge |
| ISWG➣Integrated Services Working Group (IETF) |
| ISWG➣Interoperability Sub-Working Group |
| ISWG➣Internationale Siegfried Wagner Gesellschaft e.V. |
| ISWG➣Installation Support Working Group |
| ISWG➣Interlocal Stormwater Work Group (Portland, ME) |