Lucy Ann Ewing is a fictional character in the popular American television series Dallas. The character is played by Charlene Tilton and first appeared in the series premiere on April 2, 1978. Tilton left the show at the end of season 8 in 1985, before returning for the last two episodes of season 11 in 1988, becoming a series regular again in season 12. Lucy was then written out again in 1990.

Dallas is an American prime time television soap opera that aired on CBS from April 2, 1978, to May 3, 1991. The series revolved around an affluent and feuding Texas family, the Ewings, who owned the independent oil company Ewing Oil and the cattle-ranching land of Southfork. The series originally focused on the marriage of Bobby Ewing and Pamela Barnes, whose families were sworn enemies. As the series progressed, Bobby's elder brother, oil tycoon J.R. Ewing, became the show's breakout character, whose schemes and dirty business became the show's trademark. When the show ended on May 3, 1991, J.R. was the only character to have appeared in every episode.