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Overground could refer to:


  • London Overground - the official brand name of a London suburban railway run by Transport for London since 2007
  • National Rail services in London, UK - in everyday speech, the word "overground" is often used informally to refer to National Rail services in London, to distinguish them from London Underground services.
  • Overground Network - a former temporary brand name for suburban railways in south London, UK, which is now defunct