Cwm

Cwm or cŵm may refer to:
 * Cwm (landform), a rounded, glaciated valley, also known as a corrie or cirque
 * Cwm, a steep, narrow valley, or a small valley or large hollow on the side of a hill, also known as a combe
 * Cwm (software), a general-purpose data processor for the semantic web
 * Cwm railway station, a station in Cwm, Blaenau Gwent, Wales, 1852–1963
 * Cwm Rhondda, a famous Welsh hymn tune

Places

 * Cwm, Blaenau Gwent, a community in Wales
 * Cwm, Llanrothal, a Jesuit gathering place in Herefordshire, England
 * Cwm, Denbighshire, a community in Wales
 * Cwm Cadnant, a community in Anglesey, north Wales
 * Cwm Gwaun, a community in northern Pembrokeshire, Wales
 * Cwm Penmachno, a community in Snowdonia, north Wales
 * Western Cwm, a geographical feature on Mount Everest

Abbreviations
CWM may refer to:
 * cwm (window manager) or Calm Window Manager, a stacking window manager for Unix systems
 * Canadian War Museum, Canada's national museum of military history
 * Christian Witness Ministries, a non-denominational church affiliation
 * Circus World Museum, a large museum complex in Baraboo, Wisconsin
 * Clark–Wilson model, a model for specifying and analyzing an integrity policy for a computing system
 * ClockworkMod, open source firmware for smartphones
 * Comes With Music, Nokia's digital music service
 * Common Warehouse Metamodel, a data warehousing specification
 * Contemporary worship music, a genre of Christian music used in contemporary worship
 * Contingent Workforce Management, the strategic approach to managing an organization's contingent workforce
 * Council for World Mission, a worldwide community of Christian churches