The meaning of the Acronym IWR is...

IWR is

• International Weeks of Resistance to Tobacco

More Meanings For IWR:

• Internet Weather Report
• Institute of Water Research
• US Army Corps of Engineers Institute for Water Resources
• Internationale Wagenliste für Reisezüge
• International Weeks of Resistance to Tobacco
• Italian Wine Review
• Institute of Water Resources

IWR is also in:

• Educational
• Media
• Meteorology
• Military
• Non-Profit Organizations
• Transportation
• Universities