| Acronym | Definition |
|---|
| IWM | Imperial War Museum (UK) |
| IWM | Institut für die Wissenschaften vom Menschen (German: Institute for Human Sciences; Austria) |
| IWM | Integrated Weed Management |
| IWM | Iron Wind Metals (miniatures) |
| IWM | Ibm Web Management |
| IWM | Integrated Woz Machine |
| IWM | I Want Media |
| IWM | Integrated Waste Management |
| IWM | Information Warfare Monitor (cyberspace research program) |
| IWM | Institute of Wastes Management |
| IWM | Inside Wire Maintenance |
| IWM | Integrated Workflow Management (software) |
| IWM | I Want More |
| IWM | International Waters Management |
| IWM | Institute of World Mission (missionary organization) |
| IWM | Interactive Workflow Manager (Hekimian) |
| IWM | I Wet Myself |
| IWM | Institute of Works Management |