IWSA

AcronymDefinition
IWSAInterscan Web Security Appliance
IWSAIntegrated Waste Services Association
IWSAInternational Water Supply Association
IWSAInterScan Web Security Appliance (Trend Micro Incorporated)
IWSAInternational Water Services Association (now International Water Association)
IWSAIrish Water Safety Association (est. 1945; Galway, Ireland)
IWSAInternational Winter Swimming Association
IWSAIn-Warranty Support Agreement (Trane)
IWSAIndependent Washroom Services Association (UK)