| Abbreviation | Definition |
|---|---|
| IWI | International Wines Inc |
| IWK | Indah Water Konsortium |
| IWL | Industrial Wheels, Ltd. |
| IWLA | International Warehouse Logistics Association |
| IWM | Interglobal Waste Management, Inc. |
| IWM | Interglobal Waste Management, Incorporated |
| IWM | International Wealth Management |
| IWM | Internet World Marketing |
| IWM | Iron Wind Metals |
| IWMS | Integrated Waste Management Service |
| IWS | Incredible Westmount Sensations |
| IWS | Industrial Wastewater Solutions |
| IWS | International Wealth Success |
| IWSA | Integrated Waste Services Association |
| IWT | Inn of the Weary Traveler |
| IWT | Innovative Wireless Technologies |
| IWT | Instructional Web Technologies |
| IWT | Integrated Wave Technologies |
| IWT | International Waste Transport |
| IWT | International Welding Technologies |