|Katharine Hepburn (1907 - 2003)|
|Christopher Strong (1933) [Lady Cynthia Darrington]: Killed in a plane crash after she suicidally takes off her oxygen mask, causing her to pass out at the controls (she may or may not have died of asphyxiation before impact).
Mary of Scotland (1936) [Mary Stuart, Queen of Scots]: Executed by beheading (off-screen); the movie ends as she approaches the chopping block, at which point the camera pans up to the sky as a thunderclap roars (presumably indicating/symbolizing the moment of her death).
Keeper of the Flame (1942) [Mrs. Christine Forrest]: Shot in the chest by Richard Whorf; she dies in Spencer Tracy's arms moments later. (Thanks to Tracey)
Love Affair (1994) [Ginny]: Dies (off-screen) of natural causes/old age. Her body is not shown; her death is simply implied by showing Warren Beatty returning to her now-empty house.