IWA
IWA is an abbreviation for:
- Independent Wrestling Association , an autonomous umbrella organization of various wrestling associations
- Institute of World Affairs , a non-governmental conflict management organization
- Integrated Windows authentication , a server login service from Microsoft
- International arms exhibition , today's Nuremberg IWA OutdoorClassics
- International list of goods for foreign trade , see Standard International Trade Classification
- International Water Association , a non-governmental water management organization
- International Windsurfing Association
- International Workers Association , a trade union federation
- International Workingmen's Association , a trade union federation
- International Wrestling Association (Japan)
- International Wrestling Association (Puerto Rico)
- IWA slide rule factory
Iwa stands for:
- a female first name, see Iva
- Iwa (Island) , an island in the Marshall Bennett Islands
