WMF can stand for:
- Wikimedia Foundation, a non-profit foundation that runs various open-content wiki projects
- Windhoeker Maschinenfabrik, a Namibian armoured vehicle producer
- Windows Media Format, also known as "AVI" after the container format it uses
- Windows Metafile, a graphics file format on Microsoft Windows systems
- World Monuments Fund, the foremost international non-profit historic preservation organization
- Württembergische Metallwarenfabrik ('Württembergish Metalwares Factory' in German)