| Acronym | Definition |
|---|
| FIWG➣Financial Internet Working Group (est. 2000) |
| FIWG➣Fiets Is Weer Gestolen (Dutch: Bike is Stolen Again) |
| FIWG➣Functional Integration Working Group |
| FIWG➣FUDS (Formerly Used Defense Sites) Improvement Working Group (US DoD) |
| FIWG➣Factory Integration Working Group |
| FIWG➣Forecast International Weapons Group (Newtown, CT) |