Lena Headey (born October 3, 1973) is an English actress who is best known for her roles as Sarah Connor on the Fox science fiction series Terminator: The Sarah Connor Chronicles from 2008 to 2009, and currently stars as Cersei Lannister on the HBO fantasy series Game of Thrones since 2011.

In 1994, she played Katherine "Kitty" Brydon (as an adult) in Disney's Rudyard Kipling's The Jungle Book.