Elizabeth Corday, M.B.B.S., F.R.C.S. is a fictional character in the medical drama series ER, portrayed by British actress Alex Kingston. She first appeared at the beginning of the fourth season and became a lead character before departing towards the start of the eleventh season.

ER is an American medical drama television series created by Michael Crichton that aired on NBC from September 19, 1994, to April 2, 2009, with a total of 331 episodes spanning 15 seasons. It was produced by Constant c Productions and Amblin Television, in association with Warner Bros. Television. ER follows the inner life of the emergency room (ER) of Cook County General Hospital in Chicago, and various critical issues faced by the department's physicians and staff.