WDM

WDM may refer to:

Science and technology

 * Warm dark matter in cosmology
 * Warm dense matter, a state of matter between solid and plasma
 * Wavelength-division multiplexing, a signal transmission method
 * wdm, the WINGs Display Manager on Unix
 * Windows Driver Model, a framework for device drivers in Windows
 * Wide Diesel Mixed, a series of Indian locomotives

Other uses

 * West Des Moines, Iowa, United States, a city
 * Western Development Museum of Saskatchewan
 * World Development Movement, a British campaign for social justice
 * Waking Down in Mutuality, an American "spiritual awakening" association
 * Warith Deen Muhammad (Wallace D. Muhammad), a leader of the Nation of Islam
 * WDM (Washington, D.C.), an early 1920s radio station

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