| Acronym | Definition |
|---|
| IWA➣International Webmasters Association |
| IWA➣International Water Association |
| IWA➣International Workers Association (est. 1922) |
| IWA➣International Women's Association (various locations) |
| IWA➣Ibm Writing Assistant |
| IWA➣Intel World Ahead |
| IWA➣Inland Waterways Association (UK) |
| IWA➣Integrated Windows Authentication |
| IWA➣International Wrestling Association |
| IWA➣Ivanova (Russia) |
| IWA➣Incarnate Word Academy |
| IWA➣International Windsurfing Association |
| IWA➣Williams-Gateway Airport (now Phoenix-Mesa Gateway Airport) |
| IWA➣Institute of World Affairs (Washington, DC) |
| IWA➣International Webcasting Association |
| IWA➣Independent Wrestling Association Mid-South (est. 1996) |
| IWA➣Industrial Wind Action (advocacy group) |
| IWA➣Israeli Water Authority |
| IWA➣Industrial, Wood and Allied Workers of Canada (Union) |
| IWA➣Indian Workers Association (UK) |
| IWA➣Imaging and Workflow Automation (invoicing) |
| IWA➣Interactive Web Application |
| IWA➣International Wheat Agreement |
| IWA➣Indigenous World Association |
| IWA➣Institute for Welsh Affairs (Cardiff, Wales, UK) |
| IWA➣Iraq War Archaeology |
| IWA➣Illinois Wheat Association |
| IWA➣Interorganizational Work Authorization (various companies) |
| IWA➣International Wine Accessories, Inc. |
| IWA➣Institute Women's Association (Church of Jesus Christ of Latter-day Saints single women group) |
| IWA➣Idaho Women for Agriculture |
| IWA➣Indian Wine Academy |
| IWA➣Internal Work Agreement |
| IWA➣Individual Work Authorization |
| IWA➣Interactive Weather Analysis (CAFWSP) |