Casualty may refer to:

  • Casualty (person), a person who is killed or injured in a war or disaster
  • Disaster, an event resulting in death, injury, or destruction
  • The emergency department of a hospital, also known as a Casualty Department or Casualty Ward (chiefly in the UK and in some English-speaking Commonwealth nations)
  • Casualty (TV series), the world's longest-running emergency medical drama series
  • Casualty 1906, the pilot for a British historical medical drama
  • Casualty 1907, a British historical medical drama (for which Casualty 1906 was the pilot)
  • Casualty 1909, a continuation of the British historical medical drama (from 1906 and 1907)
  • Casualty insurance, a type of insurance