Keira Knightley

Film Deaths

The Hole (2001) [Frances 'Frankie' Smith]: Dies of bulimia-related heart failure (off-screen) in the underground shelter. Her body is shown afterwards when Thora Birch discovers her, then again in the morgue during Embeth Davidtz' investigation. (Nudity alert: Topless) (Thanks to Joseph)

Domino (2005) [Domino Harvey]: Shot in the chest in a shoot-out with gang members, in a "coin toss" scene showing the possible outcome of the confrontation; the scene immediately rewinds to show the actual outcome, in which she survives. (The real-life Domino Harvey died of an accidental overdose between the filming of this movie and its release; a title card was added dedicating the film to her memory, but her death is not otherwise addressed in the actual movie.) (Thanks to Vlabor and John)

Atonement (2007) [Cecilia Tallis]: Drowned (along with several other people) when the underground station is flooded by a burst water main during a raid by German bombers; her body is shown floating in the water in a flashback as Vanessa Redgrave recounts what happened. (Thanks to Gerardo)

Silk (2007) [Helene Joncour]: Dies (off-screen) of an unspecified illness. We last see her lying in bed talking to Michael Pitt; her death is mentioned in Michael's narration in the following scene. (Thanks to Dennis)

Never Let Me Go (2010) [Ruth]: Dies on the operating table as one of her organs is harvested for transplant. (Thanks to Tommy)

Anna Karenina (2012) [Anna Karenina]: Commits suicide by throwing herself in the path of an oncoming train.

Seeking a Friend for the End of the World (2012) [Penny]: Killed, along with Steve Carell and everybody else in the world, when an asteroid collides with Earth; we last see Keira and Steve lying in bed as the scene fades to white when the asteroid strikes with the solar induced fire storm that was destroying the Earth's surface. (Thanks to Tommy and Tim)
The Nutcracker and the Four Realms (2018) [Sugar Plum Fairy]: Turned into a porcelain doll after being zapped by a machine that Mackenzie Foy had reprogrammed before Keira would use it to turn Helen Mirren back into a doll.

Doctor Zhivago (2002 TV) [Lara Antipova]: Dies (off-screen) in a work camp; her death is revealed in the narration. (See also Julie Christie in the 1965 version.) (Thanks to Nemanja)