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