Penelope "Penny" Widmore is a fictional character on the ABC television series Lost played by Sonya Walger. Penny is introduced in the last episode of the second season of Lost as the long-lost lover of Desmond Hume as well as the daughter of British tycoon and antagonist Charles Widmore. In spite of being only a recurring character, she made notable appearances in three season finales of the show: "Live Together, Die Alone", "Through the Looking Glass", and "There's No Place Like Home". Penny and Desmond's relationship is generally liked by critics and fans alike. Commentators, such as those from Entertainment Weekly, have commended the writing of their storyline.

Lost is an American science fiction adventure drama television series created by Jeffrey Lieber, J. J. Abrams, and Damon Lindelof that aired on ABC from September 22, 2004, to May 23, 2010, over six seasons and 121 episodes. It contains elements of supernatural fiction, and follows the survivors of a commercial jet airliner flying between Sydney and Los Angeles, after the plane crashes on a mysterious island somewhere in the South Pacific Ocean. Episodes typically feature a primary storyline set on the island, augmented by flashback or flashforward sequences which provide additional insight into the involved characters.