| Acronym | Definition |
|---|
| IWR➣Institute for Water Resources |
| IWR➣Internationales Wirtschaftsforum Regenerative Energien (German: International Economic Platform for Renewable Energies) |
| IWR➣Input Output Write |
| IWR➣Impaired Waters Rule (Florida) |
| IWR➣Interactive Web Response |
| IWR➣Intelligent Word Recognition |
| IWR➣Internet Weather Report |
| IWR➣Institute for Water Research |
| IWR➣Isolated Word Recognition |
| IWR➣Independent Wrestling Revolution (professional wrestling circuit) |
| IWR➣I Will Report |
| IWR➣Internet Weekly Report (blog) |
| IWR➣Integral Water Repellent (masonry mortar) |
| IWR➣Institute for Wood Research |
| IWR➣Internal Work Request |
| IWR➣Inter-Works Requisition |