William Yun Lee (born March 22, 1971) is an American actor and martial artist. He is best known for his roles as Danny Woo in the supernatural drama Witchblade and Jae Kim in the sci-fi series Bionic Woman. He has also appeared in the films Die Another Day (2002), Elektra (2005), The Wolverine (2013) and San Andreas (2015). He had a recurring role as Sang Min in Hawaii Five-0, played the original body of series protagonist Takeshi Kovacs in Altered Carbon, appeared as Marvelous Man in The Guardians of Justice (2022) and voiced Wei Shen in the game Sleeping Dogs (2012). From 2018 to 2024, he has appeared on the ABC medical drama The Good Doctor playing Dr. Alex Park.