| IGW | Impact to Ground Water
| Others |
| IGW | Imperium Galactic War
| Others |
| IGW | In Game Wiki
| Others |
| IGW | Increased Gross Weight
| Others |
| IGW | Independent Games World
| Others |
| IGW | Industrial Security Gateway
| Others |
| IGW | Institute for Global Work
| Others |
| IGW | Integral Gateway
| Others |
| IGW | Inter Galactic Wrestling
| Others |
| IGW | International Game Warden
| Others |
| IGW | International Games Week
| Others |
| IGW | International Gandu Wire
| Others |
| IGW | International Gateway
| Others |
| IGW | International Geospatial Warehouse
| Others |
| IGW | International Green Week
| Others |
| IGW | Internet Gateway
| Others |
| IGW | Investment Grade Wine
| Others |