Samantha "Sam" Taggart is a fictional character on the NBC television drama ER. She is played by actress Linda Cardellini. Linda Cardellini's addition into the main cast opening credits was in the fifth episode of season 10.

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.