Ling Woo is a fictional character in the popular US comedy-drama Ally McBeal, portrayed by Chinese American actress Lucy Liu, and is widely considered to be her breakthrough role. Woo was viewed as one of the strongest comedic characters on the show. Liu portrayed the role on recurring basis during episodes 25-32, and then joined the regular cast in episode 33. She remained in the regular cast until episode 96, after which she signed in the opening credits only for one more episode, 103.