Lucy Liu (born December 2, 1968) is a Taiwanese-American actress, who has worked in both television and movies. She is best known for playing the role of Ling Woo in the television series Ally McBeal (1998–2002), O-Ren Ishii in Kill Bill, and Joan Watson in the crime-drama series Elementary (2012–2019). Liu has received two Screen Actors Guild Awards and has won the Seoul International Drama Award for Best Actress. She has also been nominated for a Primetime Emmy Award for Outstanding Supporting Actress in a Comedy Series, and has received nominations for three People's Choice Awards and two Saturn Awards.
Liu's film work includes starring in Payback (1999), Charlie's Angels (2000), Shanghai Noon (2000), Chicago (2002), Charlie's Angels: Full Throttle (2003), Kill Bill: Volume 1 (2003), Lucky Number Slevin (2006), The Man with the Iron Fists (2012), and Set It Up (2018).
Liu is also a voice actress and has voiced Master Viper in the Kung Fu Panda franchise (2008-2016). She also voiced Silvermist in Tinker Bell (2008), Tinker Bell and the Lost Treasure (2009), Tinker Bell and the Great Fairy Rescue (2010), Pixie Hollow Games (2011), Secret of the Wings (2012), The Pirate Fairy (2014), and Tinker Bell and the Legend of the NeverBeast (2015). Her other voice credits include Mulan II (2004), as well as the English and Mandarin-dubbed versions of Magic Wonderland (2014) and The Tale of the Princess Kaguya (2013).
In 2008, she starred in an ABC comedy-drama, Cashmere Mafia, as Mia Mason, which ended after one abbreviated season. The show was one of only a few American television shows to have an Asian American series lead. In 2012, Liu joined the cast of the TNT series Southland in the recurring role of Jessica Tang, for which she won the Critics' Choice Television Award for Best Drama Guest Actress.
She is also known as Lucy Alexis Liu.