| IWA | I Will Achieve 
| Others |
| IWA | Ibm Writing Assistant
| Others |
| IWA | Imaginary Wrestling Alliance
| Others |
| IWA | Imaging and Workflow Automation
| Others |
| IWA | Incarnate Word Academy
| Others |
| IWA | Independent Winegrowers Association
| Others |
| IWA | Independent Wrestling Association
| Others |
| IWA | India Web Association
| Others |
| IWA | Indian Women Achievers
| Others |
| IWA | Indio Water Authority
| Others |
| IWA | Industrial Welding Academy
| Others |
| IWA | Inland Water Association
| Others |
| IWA | Inland Waterways Association
| Others |
| IWA | Inner Working Angle
| Others |
| IWA | Institute of Welsh Affairs
| Others |
| IWA | Institute of World Affairs
| Others |
| IWA | Insurance World Agency
| Others |
| IWA | Integral Working Architects
| Others |
| IWA | Integrated Web Activator
| Others |
| IWA | Integrated Windows Authentication
| Others |
| IWA | Intel World Ahead
| Others |
| IWA | Inter-company Work Authority
| Others |
| IWA | Interaction With Agents
| Others |
| IWA | Interactive Web Applications
| Others |
| IWA | Interdivisional Work Authorizations
| Others |
| IWA | Internal Wing Assembly
| Others |
| IWA | International Water Association
| Others |
| IWA | International Watercross Association
| Others |
| IWA | International Web Association
| Others |
| IWA | International Webmasters Association
| Others |
| IWA | International Weightlifting Association
| Others |
| IWA | International Wine Accessories
| Others |
| IWA | International Women Associates
| Others |
| IWA | International Women's Association
| Others |
| IWA | International Workers Association
| Others |
| IWA | International Workshop Agreement
| Others |
| IWA | International Wrestling Association
| Others |
| IWA | Internationale Waffen Ausstellung
| Others |
| IWA | Internet Wrestling Alliance
| Others |
| IWA | Text document (IBM Writing Assistant)
| Others |
| IWA | Wine Accessories
| Others |