The following is a list of the episodes of the British television series Casualty that were broadcast in its first 20 series. Casualty premiered on 6 September 1986 and was originally commissioned for fifteen episodes. The first series concluded on 27 December 1986. Following, its success, a second series was commissioned and Casualty has continued running since.
See main article: article and Casualty series 1.
See main article: article and Casualty series 2.
See main article: article and Casualty series 3.
See main article: article and Casualty series 4.
See main article: article and Casualty series 5.
See main article: article and Casualty series 6.
See main article: article and Casualty series 7.
See main article: article and Casualty series 8.
See main article: article and Casualty series 9.
See main article: article and Casualty series 10.
See main article: article and Casualty series 11.
See main article: article and Casualty series 12.
See main article: article and Casualty series 13.
See main article: article and Casualty series 14.
See main article: article and Casualty series 15.
See main article: article and Casualty series 16.
See main article: article and Casualty series 17.
See main article: article and Casualty series 18.
See main article: article and Casualty series 19.
See main article: article and Casualty series 20.
See main article: article and Casualty@Holby City. Of the nine crossover episodes broadcast as Casualty@Holby City, five aired in Casualty's regular timeslot, while the remaining four - "Casualty@Holby City: Part Two", "Test Your Metal", "A Great Leap Forward" and "Deny Thy Father: Part Two" - were broadcast in Holby Citys timeslot.