IWA
IWA is an abbreviation for:
- Independent Wrestling Association, an autonomous umbrella organization of various wrestling federations
- Institute of World Affairs, a non-governmental conflict management organization
- Integrated Windows Authentication, a server application service from Microsoft
- International exhibition of weapons, today's Nuremberg IWA & Outdoor Classics
- International Commodity Classification 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 composite
- International Workingmen 's Association, a trade union composite
- International Wrestling Association ( Japan)
- International Wrestling Association ( Puerto Rico)
- IWA slide rule factory
Iwa is a female first name, see Iva
- Disambiguation
- Abbreviation